230何晓锋

老师：MissDu 提交作业

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Pycharm开发环境设置与熟悉。

 

练习基本输入输出：

print('你好,{}.'.format(name))

print(sys.argv)

 

库的使用方法：

import ...

from ... import ...

 

条件语句：

    if (abs(pos()))<1:

        break

 

循环语句：

for i in range(5):

while True:

 

函数定义：

def mygoto(x,y):

def drawjx(r):

 

综合练习：画一面五星红旗，将代码与运行截图发布博客交作业。

Python 3.6.4 (v3.6.4:d48eceb, Dec 19 2017, 06:54:40) [MSC v.1900 64 bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> from turtle import *
>>> up()
>>> goto(-200,150)
>>> bgcolor("red")
>>> color("yellow","yellow")
>>> pensize(6)
>>> for i in range(5)
SyntaxError: invalid syntax
>>> for i in range(5):
	right(144)
	forward(200)

	
>>> begin_fill()
>>> for i in range(5):
	right(144)
	forward(200)

	
>>> end_fill()
>>> up()
>>> goto(-60,250)
>>> goto(-70,265)
>>> down()
>>> def move(x,y):
	turtle.up()
	turtle.goto(x,y)
	turtle.down()

	
>>> def draw_five_star(length):
	begin_fill()
	for i in range(5):
		left(144)
		forward(length)

		
>>> def draw_five_star(len)
SyntaxError: invalid syntax
>>> def draw_five_star(len):
	begin_fill()
	for i in range(5):
		left(144)
		forward(len)
	end_fill()

	
>>> draw_five_star(50)
>>> move(-50,195)
Traceback (most recent call last):
  File "<pyshell#41>", line 1, in <module>
    move(-50,195)
  File "<pyshell#25>", line 2, in move
    turtle.up()
NameError: name 'turtle' is not defined
>>> def move(x,y)
SyntaxError: invalid syntax
>>> def move(x,y):
	up()
	goto(x,y)
	down()

	
>>> move(-50,195)
>>> draw_five_star(50)
>>> move(-35,110)
>>> draw_five_star(50)
>>> move(-65,30)
>>> move(-55,30)
>>> move(-75,30)
>>> draw_five_star(50)
>>> 

　

字符串练习：

http://news.gzcc.cn/html/2017/xiaoyuanxinwen_1027/8443.html

取得校园新闻的编号

 

https://docs.python.org/3/library/turtle.html

产生python文档的网址

http://news.gzcc.cn/html/xiaoyuanxinwen/4.html

产生校园新闻的一系列新闻页网址

练习字符串内建函数：strip,lstrip,rstrip,split,count，replace

用函数得到校园新闻编号

 

用函数统计一歌词(文章、小说)中单词出现的次数，替换标点符号为空格，用空格进行分词。

# -*- coding: UTF-8 -*-
novel = '''In the shadow of a big apple tree four boys lay on the grass studying a map of the United States.
One of the group was talking vehemently and pointing out a route of some sort with a stubby carpenter’s pencil; the other three were watching with eager interest.
“That sounds all right,” said one of the four as he rose to lean on his elbow, 
“but you can’t do it with a little boat like yours. I don’t believe you could do it anyway, Ken.”
“Well, I couldn’t do it in a steam-yacht,” the boy with the pencil returned, “for obvious reasons. But I can and will make that trip.”
“I admire your pluck, Ken,” the third boy exclaimed. 
“It took considerable gumption to plan and build a craft like yours alone; but I don’t believe you’d bring your boat through whole.”

Again they bent down to the map, and the three listened while Kenneth Ransom went over the route again.

“Yes, it looks all right on the map,” Clyde Morrow broke in; 
“but you don’t realize that the couple of inches of Illinois River from Chicago to the Mississippi, for instance, is a couple of hundred miles.”
“Of course it’s a big undertaking, but think of the fun.
You fellows like to sail on the Lake, and we have been through some pretty tough squalls,
and had some mighty pleasant times, too. Sailing on the Lake is good sport, and exciting, too, for a while, 
but the cruising I propose to do makes Lake sailing tame. Think of the places we shall see, the fishing we shall do! 
Think of sailing on the warm Gulf of Mexico in January, cruising around the thousands of tropical islands, 
then up the Atlantic coast when it is most apt to be calm, stopping whenever there is anything worth stopping for. 
Just think of the cities we can visit—St. Louis, Vicksburg, Memphis, New Orleans, Mobile, 
Jacksonville, Hampton Roads, Philadelphia, New York, and—” He stopped for sheer loss of breath.
'''

print(novel)
novel_len = novel.__len__()
print(novel_len)

for i in range(novel_len):
    if novel[i].__eq__('“'):
        novel.replace(novel[i], ' ')
    elif novel[i].__eq__('”'):
        novel.replace(novel[i], ' ')
    elif novel[i] == '.':
        novel.replace(novel[i], ' ')
    elif novel[i] == ',':
        novel.replace(novel[i], ' ')
    elif novel[i] == '’':
        novel.replace(novel[i], ' ')

print(novel)
novel_word = novel.split()
print(novel_word)
novel_word_count = novel.count('of')
print(novel_word_count)

　　

 

转载于:https://www.cnblogs.com/dami666/p/8619757.html