Python读取文件

from sys import argvscript,filename = argvtxt = open(filename)//从命令行参数获取文件名print("Here's your file %r:" %filename)#%rprint(txt.read())print("I'll also ask you to type it again:")file_again = input(">")#二次读取，从程序内部输入文件名txt_again = open(file_again)print(txt_again.read())

从上篇文章，学过了命令行的使用方法，上段代码中从命令行中获取到文件的名字，通过open("filename")来打开文件，txt.read()方法来读取文件中的内容。