>>> import string
>>> string.uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> string.lowercase
'abcdefghijklmnopqrstuvwxyz'
>>> string.letters
'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> string.digits
'0123456789'

#! /usr/bin/pythonimport stringalphas = string.letters + '_'
nums = string.digitsprint 'Welcome to the Identifier Checker v1.0'
print 'Python variables must be at least 2 chars long'myInp = raw_input('Identifier to test? ')if len(myInp) > 1:if myInp[0] not in alphas:print 'invalid: first symbol must be alphabetic'else:for otherChar in myInp[1:]:if otherChar not in alphas + nums:print 'invalid: remaining symbols must be alphabetic'breakelse:print 'okay as an Identifier'
else:print 'invalid: python variables must be at least 2 chars long'

alphanums = alphas + nums
for otherChar in myInp[1:]:if otherChar not in alphanums:

>>> s = 'Spanish Inquisition Made Easy'
>>> import string
>>> string.upper(s[:3] + s[20])
'SPAM'

>>> '%s %s' % ('Spanish', 'Inquisition')
'Spanish Inquisition'
>>> s = ' '.join(('Spanish', 'Inquisition', 'Made Easy'))
>>> s
'Spanish Inquisition Made Easy'
>>> ('%s%s' % (s[:3], s[20])).upper()
'SPAM'

>>> 'Hello' + u' ' + 'World' +u'!'
u'Hello World!'

>>> '%x' % 108
'6c'
>>> '%X' % 108
'6C'
>>> '%#x' % 108
'0x6c'
>>> '%f' % 1234.567890
'1234.567890'
>>> '%.2f' % 1234.567890
'1234.57'
>>> '%e' % 1234.567890
'1.234568e+03'
>>>
>>> '%+d' % 4
'+4'
>>> '%+d' % -4
'-4'
>>> 'we are at %d%%' % 100
'we are at 100%'
>>> 'Host: %s Port: %d' % ('mars',80)
'Host: mars Port: 80'
>>> 'MM/DD/YY = %02d/%02d/%d' % (2, 15, 67)
'MM/DD/YY = 02/15/67'

>>> 'There are %(howmany)d %(lang)s Quotation Symbols' % {'lang':'Python', 'howmany':3}
'There are 3 Python Quotation Symbols'