Programmer's Cold joke python version

In Bole online saw a cold joke, feel very interesting.

1 voidtellstory ()2 {3printf"there used to be a mountain \ n");4printf"There's a temple on the hill \ n");5printf"There's an old monk and a little monk in the temple.");6printf"One day \ n");7printf"the Little Monk said to the old monk \ n");8printf""Tell me a story." \ n");9printf"so the old monk said: \ n");Ten tellstory (); One}

The original code was written in C and tried to convert to Python:

1 #!/bin/env2 #Encoding:utf-83 4 deftellstory (CNT):5     Print "there used to be a mountain \ n"6     Print "There's a temple on the hill \ n"7     Print "There's an old monk and a little monk in the temple."8     Print "One day \ n"9     Print "the Little Monk said to the old monk \ n"Ten     Print ""Tell me a story." \ n" One     Print "so the old monk said: \ n" A     Print "-----------\ n%s years ago \ n"%CNT -CNT + = 2 - tellstory (CNT) the  - if __name__=='__main__': -Tellstory (1)

However, due to the Python compiler's limit on the maximum number of recursive nesting levels, this version does not perform well, so Google has the following versions:

#!/bin/env#Encoding:utf-8 fromSysImportMaxintdeftellstory (CNT): Rtn_str="'Rtn_str+="there used to be a mountain \ n"Rtn_str+="There's a temple on the hill \ n"Rtn_str+="There's an old monk and a little monk in the temple."Rtn_str+="One day \ n"Rtn_str+="the Little Monk said to the old monk \ n"Rtn_str+=""Tell me a story." \ n"Rtn_str+="so the old monk said: \ n"Rtn_str+="-----------\ n%s years ago \ n"%CNTyieldRtn_strif __name__=='__main__':     forIinchXrange (1, Maxint, 2):         forEinchtellstory (i):PrintE

Use Yield+xrange instead of Print+range to avoid memoryerror caused by too large intermediate variables.

This version will execute indefinitely until the maximum integer "9223372036854775807" of the py is reached or the system memory is low.

Summarize:

1. The function of the + + operator in Python differs greatly from other languages:

>>> i = 1
>>> ++i
1
>>> i++
File "<stdin>", line 1
i++
^
Syntaxerror:invalid syntax
>>>

To implement a self-add or decrement operation, it is best to use + = or-=.

2. In Python, the Range method generates a list directly for traversal or other operations, and xrange works like a generator that uses yield, and calculates a value to return each time it is called. Therefore, when traversing, the performance of xrange is better than range, especially in the case of huge data volume.

Programmer's Cold joke python version