Python自动化测试之文件操作

1、读、写、追加文件

读：打开文件  r    读写：r+

写：w 可写不可读  清空原文件   写读：w+ 清空文件

追加：a+  可以读写，文件不存在自动创建

练习读txt文件类容：

#-*- coding : utf-8 -*-
file = open(r'C:\\Users\Administrator\PycharmProjects\\untitled\\test\致橡树.txt')
with file:
    data = file.read()
    print(data)

 读取excel文件类容：

读取Excel是需要模块openpyxl：

关闭文件操作： file.close()

文件句柄的关系，open过后需要关闭

读取文件一行信息：file.readline()

读取文件全部信息信息：file.readlines()

#!/usr/bin/python3
# -*- coding: UTF-8 -*-
'''
@project:
@name: test_excel
@date: 2019/12/4 11:51
'''
from openpyxl import load_workbook
import openpyxl
def main(path_url=r"D:\untitled\test\700URLV1.xlsx"):
    L = []
    workbook = load_workbook(path_url)  # 找到需要xlsx文件的位置
    booksheet = workbook.active  # 获取当前活跃的sheet,默认是第一个sheet
    for row in booksheet.rows:
        for col in row:
            if col.value:
                L.append(col.value)
    return L
if __name__ == '__main__':
    print(main())

文件写入类容操作练习：

#-*- coding : utf-8 -*-
file = open('C:\\Users\Administrator\PycharmProjects\\untitled\\test\致橡树.txt','w')
for i in range(20):
    file.write(str(i))
file.close()

file = open('C:\\Users\Administrator\PycharmProjects\\untitled\\test\致橡树.txt','r')
print(file.read())
file.close()

创建文件 操作：

写入文件，换行操作：运用"\n"

#-*- coding : utf-8 -*-
file = open('C:\\Users\Administrator\PycharmProjects\\untitled\\test\致橡.txt','w')
for i in range(5):
    file.write(str(i) + '\n')
file.close()

file = open('C:\\Users\Administrator\PycharmProjects\\untitled\\test\致橡.txt','r')
print(file.read())
file.close()