regarding ignore case sensitive of a string using regular expressions

[Mosas]

Dear All
      In Perl when we are checking some conditions
using regular expression we can ignore the case
sensitive of a string using the following regular 
expression  /(^[^a-z])|/|(\.\.)/i.
      But If I try to do this in Python I couldn't get
any result.
      So Any body know regarding this Kindly mail me
with example.

regards
Prabahar
 

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