摘要：
import fileinputimport osos.chdir(r'd:\\')f = open('test.txt','r')f2=open('test2.txt','a')for line in f: line=line[1:] #去掉每行的第一个字符 f2.writelines(line)... 阅读全文
摘要：
class ShortInputException(Exception): '''A user-defined exception class''' def __init__(self,length,atleast): Exception.__init__(self) self.length=len... 阅读全文