number formatting

I have a simple question how can i show the number 12045678 as 12,045,678 i.e automatically show in american format in jython

so 12345 should be 12,345 and 1234567890 should be 1,234,567,890 and so on.

Than开发者_如何转开发ks everyone for your help.

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See the official documentation, in particular 7.1.3.1. Format Specification Mini-Language and in particular:

'n' Number. This is the same as 'g', except that it uses the current locale setting to insert the appropriate number separator characters.

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See How to print number with commas as thousands separators?

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You can use a function like this:

def numberToPrettyString(n):
   """Converts a number to a nicely formatted string.
      Example: 6874 => '6,874'."""
   l = []
   for i, c in enumerate(str(n)[::-1]):
       if i%3==0 and i!=0:
           l += ','
       l += c
   return "".join(l[::-1])

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prior to 2.6 there is no built-in function

this is the easiest one I've found

def splitthousands(s, sep=','):  
    if len(s) <= 3: return s  
    return splitthousands(s[:-3], sep) + sep + s[-3:]

splitthousands('123456')

123,456