Python parse comma-separated number into int

How would I parse the string 1,000,000 (one million) into it’s integer value in Python?

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Method 1

>>> a = '1,000,000'
>>> int(a.replace(',', ''))
1000000
>>>

Method 2

There’s also a simple way to do this that should handle internationalization issues as well:

>>> import locale
>>> locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
'en_US.UTF-8'
>>> locale.atoi("1,000,000")
1000000
>>>

I found that I have to explicitly set the locale first as above, otherwise it doesn’t work for me and I end up with an ugly traceback instead:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.6/locale.py", line 296, in atoi
    return atof(str, int)
  File "/usr/lib/python2.6/locale.py", line 292, in atof
    return func(string)
ValueError: invalid literal for int() with base 10: '1,000,000'

Method 3

Replace the ‘,’ with ” and then cast the whole thing to an integer.

>>> int('1,000,000'.replace(',',''))
1000000

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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