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#!python
#
# Perl Weekly Challenge 287
# Task 2
#
# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-287>
#
import sys
import re
# task implementation
# the return value will be printed
def task_2( args ):
number = args[ 0 ]
good = re.compile( '^[+-]?\\d+([.]\\d+)?(E[+-]?\\d+)?$' )
return good.match( number ) is not None
# invoke the main without the command itself
if __name__ == '__main__':
print( task_2( sys.argv[ 1: ] ) )
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