常見報錯如下：

SyntaxError: Missing parentheses in call to 'print'. Did you mean print(x)?
 

NameError: name 'collections' is not defined
 

ModuleNotFoundError: No module named 'Queue'
 

NameError: name 'xrange' is not defined
 

AttributeError: module 'sys' has no attribute 'maxint'
 

具體修改方法請看程式碼示範

#2018-10-23 13:35:16 October Tuesday the 43 week, the 296 day SZ

SyntaxError: Missing parentheses in call to 'print'. Did you mean print(x)?

原始碼：
print x 
修改：
print(x)

#2018-10-23 13:33:48 October Tuesday the 43 week, the 296 day SZ
NameError: name 'collections' is not defined
原始碼：

queue = collections.deque([(source.x, source.y)])
修改：
from collections import deque
queue = deque([(source.x, source.y)])



#2018-10-23 13:28:07 October Tuesday the 43 week, the 296 day SZ
ModuleNotFoundError: No module named 'Queue'
原始碼：        
import Queue
q = Queue.Queue(maxsize = n * m)

修改：
from queue import Queue 

q = Queue(maxsize = n * m)


#2018-10-23 13:26:23 October Tuesday the 43 week, the 296 day SZ

NameError: name 'xrange' is not defined

AttributeError: module 'sys' has no attribute 'maxint'
原始碼：
        record = [[sys.maxint for _ in xrange(m)] for i in xrange(n)]
修改：

        record = [[sys.maxsize for _ in range(m)] for i in xrange(n)]
 

看了官網文件後瞭解python3中沒有maxint了，只有maxsize

import sys

i = sys.maxsize

print(i)

 

官網說明文件：https://docs.python.org/3.1/whatsnew/3.0.html#integers

 

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