简单小例子，拷贝文件读输入

import shutil
class PrintClass:
    def __init__(self):
        pass
    def printS(self, s):
        print (s)
    def copyFile(self):
        shutil.copyfile("D:\\workspace\\file1.txt", "D:\\workspace\\file2.txt")

if __name__ == '__main__':
    p = PrintClass()
    p.copyFile()
    x=int(input("Please enter an integer:"))#获取行输入
    if x>0:
        print ('正数')
    elif x==0:
        print ('零')
    else:
        print ('负数')