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Re: semicolon at end of python's statements

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  Re: semicolon at end of python's statements Tim Chase <python.list@tim.thechases.com> - 2013-08-28 19:35 -0500

#53199 — Re: semicolon at end of python's statements

On 2013-08-29 04:48, Mohsen Pahlevanzadeh wrote:
> I'm C++ programmer and unfortunately put semicolon at end of my
> statements in python.
> 
> Quesion:
> What's really defferences between putting semicolon and don't put?

From a technical standpoint, nothing (see below).  From a "readability
on the part of other programmers" standpoint, it's bad practice.  So
if you're coding for yourself, do whichever makes you happy.  If you
want to interact with other Python developers and don't want to make
them grumpy, remove them.

-tkc



>>> def with_semis():
...     print 1;
...     print 2;
...     print 3;
... 
>>> def without_semis():
...     print 1
...     print 2
...     print 3
... 
>>> import dis
>>> dis.dis(with_semis)
  2           0 LOAD_CONST               1 (1)
              3 PRINT_ITEM          
              4 PRINT_NEWLINE       

  3           5 LOAD_CONST               2 (2)
              8 PRINT_ITEM          
              9 PRINT_NEWLINE       

  4          10 LOAD_CONST               3 (3)
             13 PRINT_ITEM          
             14 PRINT_NEWLINE       
             15 LOAD_CONST               0 (None)
             18 RETURN_VALUE        
>>> dis.dis(without_semis)
  2           0 LOAD_CONST               1 (1)
              3 PRINT_ITEM          
              4 PRINT_NEWLINE       

  3           5 LOAD_CONST               2 (2)
              8 PRINT_ITEM          
              9 PRINT_NEWLINE       

  4          10 LOAD_CONST               3 (3)
             13 PRINT_ITEM          
             14 PRINT_NEWLINE       
             15 LOAD_CONST               0 (None)
             18 RETURN_VALUE        

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