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AttributeError: ‘DataFrame’ object has no attribute ‘concat’

ERROR: Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory: 'C:\\Users\\10647\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\\LocalCache\\local-packages\\Python38\\site-packages\\sklear..

import turtle, time# 七彩管间距def drawgap(): turtle.penup() turtle.fd(5)# 绘制单根七彩管def drawline(draw): drawgap() turtle.pendown() if draw else turtle.penup() turtle.fd(40) drawgap() turtle.right(90)# 按照数字的特性绘制七彩管def drawdig.

用途：根据表格每行数据，匹配在txt文章中出现的次数统计示例：注意事项：1. 环境：pip install re & pandas & xlrd; python 3;2. 表格第一行会被忽略，往下才是关键词；关键词页放在第一个表单，最好只有这一个表单；3. 表格与TXT文件都放在.py同级目录，或者在代码中显示绝对路径；import reimport pandas as pdimport xlrd# 读取匹配关键字表格并输出为列表(忽略...

# 汉诺塔 hanoi 递归解法def hanoi(n, a, b, c): if n == 1: print(a, ' ---> ', c) # 如果一个盘子则直接从a移动到c else: hanoi(n - 1, a, c, b) # 借助c把前n-1个盘子从a移动到b print(a, ' ---> ', c) ...