Revisions to How do I get a substring of a string in Python? [duplicate]

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edited Jun 22, 2018 at 15:24

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Substr() normally (i.e. PHP, and Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginningbeginning and LENGTHLENGTH.

But Python's behaviour is different,different; it expects beginning and one after END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and one after END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

Substr() normally (i.e. PHP and Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH.

But Python's behaviour is different; it expects beginning and one after END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

the second index is the first position which is not contained in the result (one after the end).

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edit approved Jun 27, 2014 at 14:37

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Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and one after END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and one after END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

Error in code

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edit approved Feb 8, 2013 at 16:44

Seanog

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Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[beginning,s[ beginning+LENGTH]beginning : beginning + LENGTH]

Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[beginning, beginning+LENGTH]

Substr() normally (i.e. PHP, Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH

But Python's behaviour is different, it expects beginning and END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

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answered Aug 4, 2012 at 11:43

Michał Leon

reputation score 2389
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