matplotlib curve.py

最新推荐文章于 2025-12-19 16:26:43 发布
转载 最新推荐文章于 2025-12-19 16:26:43 发布 · 106 阅读 · 0 ·
CC 4.0 BY-SA版权
原文链接：http://www.cnblogs.com/zhangchunbo/p/4215909.html
文章标签：

#python

本文介绍如何使用Python的Matplotlib库和NumPy库绘制正弦和余弦函数的图形。通过生成从0到2π的等差数列，并计算对应的正弦和余弦值，最后使用Matplotlib的plot函数绘制曲线并展示。 
import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0, 2*np.pi, 100)
sinX = np.sin(x)
cosX = np.cos(x)

plt.plot(x, sinX)
plt.plot(x, cosX)

plt.show()

转载于:https://www.cnblogs.com/zhangchunbo/p/4215909.html

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--- Logging error --- Traceback (most recent call last): File "D:\Anaconda\Lib\logging\__init__.py", line 1163, in emit stream.write(msg + self.terminator) UnicodeEncodeError: 'gbk' codec can't encode character '\xb3' in position 75: illegal multibyte sequence Call stack: File "D:\PythonProject1\水位计算软件.py", line 606, in <module> root.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\PythonProject1\水位计算软件.py", line 572, in show_results self.calculator.plot_results() File "D:\PythonProject1\水位计算软件.py", line 274, in plot_results plt.show() File "D:\Anaconda\Lib\site-packages\matplotlib\pyplot.py", line 614, in show return _get_backend_mod().show(*args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\backend_bases.py", line 3547, in show cls.mainloop() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 544, in start_main_loop first_manager.window.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\Anaconda\Lib\tkinter\__init__.py", line 862, in callit func(*args) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 274, in idle_draw self.draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 10, in draw super().draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 382, in draw self.figure.draw(self.renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 94, in draw_wrapper result = draw(artist, renderer, *args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\figure.py", line 3257, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axes\_base.py", line 3181, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axis.py", line 1423, in draw self.label.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 752, in draw bbox, info, descent = self._get_layout(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 382, in _get_layout w, h, d = _get_text_metrics_with_cache( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 69, in _get_text_metrics_with_cache return _get_text_metrics_with_cache_impl( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 77, in _get_text_metrics_with_cache_impl return renderer_ref().get_text_width_height_descent(text, fontprop, ismath) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 215, in get_text_width_height_descent self.mathtext_parser.parse(s, self.dpi, prop) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 86, in parse return self._parse_cached(s, dpi, prop, antialiased, load_glyph_flags) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 100, in _parse_cached box = self._parser.parse(s, fontset, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2170, in parse result = self._expression.parseString(s) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 1131, in parse_string loc, tokens = self._parse(instring, 0) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4891, in parseImpl return super().parseImpl(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4790, in parseImpl loc, tokens = self_expr_parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 856, in _parseNoCache tokens = fn(instring, tokens_start, ret_tokens) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 291, in wrapper ret = func(*args[limit:]) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2206, in non_math symbols = [Char(c, self.get_state()) for c in s] File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1091, in __init__ self._update_metrics() File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1097, in _update_metrics metrics = self._metrics = self.fontset.get_metrics( File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 286, in get_metrics info = self._get_info(font, font_class, sym, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 375, in _get_info font, num, slanted = self._get_glyph(fontname, font_class, sym) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 710, in _get_glyph return super()._get_glyph(fontname, font_class, sym) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 648, in _get_glyph _log.info("Substituting symbol %s from %s", sym, family) Message: 'Substituting symbol %s from %s' Arguments: ('³', 'STIXGeneral') 2025-07-26 16:29:36,050 - matplotlib.mathtext - WARNING - Font 'default' does not have a glyph for '\xb3' [U+b3], substituting with a dummy symbol. 2025-07-26 16:29:36,051 - matplotlib.mathtext - INFO - Substituting symbol ³ from STIXGeneral 2025-07-26 16:29:36,145 - matplotlib.mathtext - WARNING - Font 'default' does not have a glyph for '\xb3' [U+b3], substituting with a dummy symbol. 2025-07-26 16:29:36,145 - matplotlib.mathtext - INFO - Substituting symbol ³ from STIXGeneral --- Logging error --- Traceback (most recent call last): File "D:\Anaconda\Lib\logging\__init__.py", line 1163, in emit stream.write(msg + self.terminator) UnicodeEncodeError: 'gbk' codec can't encode character '\xb3' in position 75: illegal multibyte sequence Call stack: File "D:\PythonProject1\水位计算软件.py", line 606, in <module> root.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\PythonProject1\水位计算软件.py", line 572, in show_results self.calculator.plot_results() File "D:\PythonProject1\水位计算软件.py", line 274, in plot_results plt.show() File "D:\Anaconda\Lib\site-packages\matplotlib\pyplot.py", line 614, in show return _get_backend_mod().show(*args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\backend_bases.py", line 3547, in show cls.mainloop() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 544, in start_main_loop first_manager.window.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\Anaconda\Lib\tkinter\__init__.py", line 862, in callit func(*args) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 274, in idle_draw self.draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 10, in draw super().draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 382, in draw self.figure.draw(self.renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 94, in draw_wrapper result = draw(artist, renderer, *args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\figure.py", line 3257, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axes\_base.py", line 3181, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axis.py", line 1423, in draw self.label.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 752, in draw bbox, info, descent = self._get_layout(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 382, in _get_layout w, h, d = _get_text_metrics_with_cache( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 69, in _get_text_metrics_with_cache return _get_text_metrics_with_cache_impl( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 77, in _get_text_metrics_with_cache_impl return renderer_ref().get_text_width_height_descent(text, fontprop, ismath) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 215, in get_text_width_height_descent self.mathtext_parser.parse(s, self.dpi, prop) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 86, in parse return self._parse_cached(s, dpi, prop, antialiased, load_glyph_flags) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 100, in _parse_cached box = self._parser.parse(s, fontset, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2170, in parse result = self._expression.parseString(s) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 1131, in parse_string loc, tokens = self._parse(instring, 0) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4891, in parseImpl return super().parseImpl(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4790, in parseImpl loc, tokens = self_expr_parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 856, in _parseNoCache tokens = fn(instring, tokens_start, ret_tokens) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 291, in wrapper ret = func(*args[limit:]) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2206, in non_math symbols = [Char(c, self.get_state()) for c in s] File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1091, in __init__ self._update_metrics() File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1097, in _update_metrics metrics = self._metrics = self.fontset.get_metrics( File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 286, in get_metrics info = self._get_info(font, font_class, sym, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 375, in _get_info font, num, slanted = self._get_glyph(fontname, font_class, sym) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 710, in _get_glyph return super()._get_glyph(fontname, font_class, sym) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 648, in _get_glyph _log.info("Substituting symbol %s from %s", sym, family) Message: 'Substituting symbol %s from %s' Arguments: ('³', 'STIXGeneral') 2025-07-26 16:29:37,728 - matplotlib.mathtext - WARNING - Font 'default' does not have a glyph for '\xb3' [U+b3], substituting with a dummy symbol. 2025-07-26 16:29:37,728 - matplotlib.mathtext - INFO - Substituting symbol ³ from STIXGeneral --- Logging error --- Traceback (most recent call last): File "D:\Anaconda\Lib\logging\__init__.py", line 1163, in emit stream.write(msg + self.terminator) UnicodeEncodeError: 'gbk' codec can't encode character '\xb3' in position 75: illegal multibyte sequence Call stack: File "D:\PythonProject1\水位计算软件.py", line 606, in <module> root.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\PythonProject1\水位计算软件.py", line 572, in show_results self.calculator.plot_results() File "D:\PythonProject1\水位计算软件.py", line 274, in plot_results plt.show() File "D:\Anaconda\Lib\site-packages\matplotlib\pyplot.py", line 614, in show return _get_backend_mod().show(*args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\backend_bases.py", line 3547, in show cls.mainloop() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 544, in start_main_loop first_manager.window.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\Anaconda\Lib\tkinter\__init__.py", line 862, in callit func(*args) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 274, in idle_draw self.draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 10, in draw super().draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 382, in draw self.figure.draw(self.renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 94, in draw_wrapper result = draw(artist, renderer, *args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\figure.py", line 3257, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axes\_base.py", line 3181, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axis.py", line 1423, in draw self.label.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 752, in draw bbox, info, descent = self._get_layout(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 382, in _get_layout w, h, d = _get_text_metrics_with_cache( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 69, in _get_text_metrics_with_cache return _get_text_metrics_with_cache_impl( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 77, in _get_text_metrics_with_cache_impl return renderer_ref().get_text_width_height_descent(text, fontprop, ismath) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 215, in get_text_width_height_descent self.mathtext_parser.parse(s, self.dpi, prop) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 86, in parse return self._parse_cached(s, dpi, prop, antialiased, load_glyph_flags) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 100, in _parse_cached box = self._parser.parse(s, fontset, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2170, in parse result = self._expression.parseString(s) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 1131, in parse_string loc, tokens = self._parse(instring, 0) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4891, in parseImpl return super().parseImpl(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4790, in parseImpl loc, tokens = self_expr_parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 856, in _parseNoCache tokens = fn(instring, tokens_start, ret_tokens) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 291, in wrapper ret = func(*args[limit:]) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2206, in non_math symbols = [Char(c, self.get_state()) for c in s] File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1091, in __init__ self._update_metrics() File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1097, in _update_metrics metrics = self._metrics = self.fontset.get_metrics( File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 286, in get_metrics info = self._get_info(font, font_class, sym, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 375, in _get_info font, num, slanted = self._get_glyph(fontname, font_class, sym) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 710, in _get_glyph return super()._get_glyph(fontname, font_class, sym) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 648, in _get_glyph _log.info("Substituting symbol %s from %s", sym, family) Message: 'Substituting symbol %s from %s' Arguments: ('³', 'STIXGeneral') --- Logging error --- Traceback (most recent call last): File "D:\Anaconda\Lib\logging\__init__.py", line 1163, in emit stream.write(msg + self.terminator) UnicodeEncodeError: 'gbk' codec can't encode character '\xb3' in position 75: illegal multibyte sequence Call stack: File "D:\PythonProject1\水位计算软件.py", line 606, in <module> root.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\PythonProject1\水位计算软件.py", line 572, in show_results self.calculator.plot_results() File "D:\PythonProject1\水位计算软件.py", line 274, in plot_results plt.show() File "D:\Anaconda\Lib\site-packages\matplotlib\pyplot.py", line 614, in show return _get_backend_mod().show(*args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\backend_bases.py", line 3547, in show cls.mainloop() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 544, in start_main_loop first_manager.window.mainloop() File "D:\Anaconda\Lib\tkinter\__init__.py", line 1505, in mainloop self.tk.mainloop(n) File "D:\Anaconda\Lib\tkinter\__init__.py", line 1968, in __call__ return self.func(*args) File "D:\Anaconda\Lib\tkinter\__init__.py", line 862, in callit func(*args) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\_backend_tk.py", line 274, in idle_draw self.draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 10, in draw super().draw() File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 382, in draw self.figure.draw(self.renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 94, in draw_wrapper result = draw(artist, renderer, *args, **kwargs) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\figure.py", line 3257, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axes\_base.py", line 3181, in draw mimage._draw_list_compositing_images( File "D:\Anaconda\Lib\site-packages\matplotlib\image.py", line 134, in _draw_list_compositing_images a.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\axis.py", line 1423, in draw self.label.draw(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\artist.py", line 71, in draw_wrapper return draw(artist, renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 752, in draw bbox, info, descent = self._get_layout(renderer) File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 382, in _get_layout w, h, d = _get_text_metrics_with_cache( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 69, in _get_text_metrics_with_cache return _get_text_metrics_with_cache_impl( File "D:\Anaconda\Lib\site-packages\matplotlib\text.py", line 77, in _get_text_metrics_with_cache_impl return renderer_ref().get_text_width_height_descent(text, fontprop, ismath) File "D:\Anaconda\Lib\site-packages\matplotlib\backends\backend_agg.py", line 215, in get_text_width_height_descent self.mathtext_parser.parse(s, self.dpi, prop) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 86, in parse return self._parse_cached(s, dpi, prop, antialiased, load_glyph_flags) File "D:\Anaconda\Lib\site-packages\matplotlib\mathtext.py", line 100, in _parse_cached box = self._parser.parse(s, fontset, fontsize, dpi) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2170, in parse result = self._expression.parseString(s) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 1131, in parse_string loc, tokens = self._parse(instring, 0) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4891, in parseImpl return super().parseImpl(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 4790, in parseImpl loc, tokens = self_expr_parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 817, in _parseNoCache loc, tokens = self.parseImpl(instring, pre_loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 3886, in parseImpl loc, exprtokens = e._parse(instring, loc, doActions) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 921, in _parseCache value = self._parseNoCache(instring, loc, doActions, callPreParse) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 856, in _parseNoCache tokens = fn(instring, tokens_start, ret_tokens) File "D:\Anaconda\Lib\site-packages\pyparsing\core.py", line 291, in wrapper ret = func(*args[limit:]) File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 2206, in non_math symbols = [Char(c, self.get_state()) for c in s] File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1091, in __init__ self._update_metrics() File "D:\Anaconda\Lib\site-packages\matplotlib\_mathtext.py", line 1097, in 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07-27
由于我们之前已经设置过全局字体，但可能微软雅黑在某些系统中没有，因此我们添加一个回退机制：尝试使用DejaVu Sans（这个字体在matplotlib中是自带的，但可能不包含中文）。所以我们需要一个同时支持中文和³的...
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