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doubling a string by using 'for' loop

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I want to double a string by using 'for' loop in a special way for example:
Expand|Select|Wrap|Line Numbers
  2. string1 = 'abc'
  3. #after doubled
  4. string1 = 'aabbcc'
anyway, in python what does "+=" mean?
Sep 24 '07 #1
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511 Recognized Expert Contributor
I want to double a string by using 'for' loop in a special way for example:
Expand|Select|Wrap|Line Numbers
  2. string1 = 'abc'
  3. #after doubled
  4. string1 = 'aabbcc'
anyway, in python what does "+=" mean?
Expand|Select|Wrap|Line Numbers
  1. >>> s="abc"
  2. >>> ''.join([i*2 for i in s ])
  3. 'aabbcc'
c+=1 means the same as c=c+1
Sep 24 '07 #2

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