Q&A参考连接 Problem:IOError: [Errno 2] No such file or directory. os.path.exists() 如果目录不存在,会返回一个0值. 所以,如果你如下使用该函数,会得到 Problem 中描述的错误,而且错误会定位在其他地方: import os try: os.path.exists("E:/Contact") #Check if dir exist except: os.mkdir("E:/Contact&…
Prime Path Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14091 Accepted: 7959 Description The ministers of the cabinet were quite upset by the message from the Chief of Security stating that they would all have to change the four-digit r…
for notes of learing python. // just ignore the ugly/wrong highlight for python code. """odbchelper.py sample script This program is part of "Dive Into Python", a free Python book for experienced programmers. Visit http://diveinto…
three version are provided. disjoint set, linked list version with weighted-union heuristic, rooted tree version with rank by union and path compression, and a minor but substantial optimization for path compression version FindSet to avoid redundanc…
