How to find that a line "genman.py" exists in a python file

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I am trying to find if a line "genman.py" exists in a file "C:\python.py".Can someone suggest how can I do that?

use strict;
use warnings;
my $gen_build_man = C:\python.py
open my $GENMAN, '<', "$gen_build_man" or die "could not open $gen_bui
+ld_man - $!"; 
while (<$GENMAN>)
{
#check if it has the line "genman.py"
  
}
[download]

Comment on How to find that a line "genman.py" exists in a python file Download Code

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Re: How to find that a line "genman.py" exists in a python file by stevieb (Canon) on Apr 01, 2012 at 17:35 UTC
`use strict; use warnings; my $gen_build_man = C:\python.py open my $GENMAN, '<', "$gen_build_man" or die "could not open $gen_bui +ld_man - $!"; while ( my $line = <$GENMAN> ){ print "I have the line!" if $line =~ /genman\.py/; }` [download]	[reply] [d/l]
Re^2: How to find that a line "genman.py" exists in a python file by Anonymous Monk on Apr 01, 2012 at 17:44 UTC
I actually want to print it if the line is not there	[reply]
Re^3: How to find that a line "genman.py" exists in a python file by stevieb (Canon) on Apr 01, 2012 at 17:50 UTC
`use strict; use warnings; my $gen_build_man = C:\python.py open my $GENMAN, '<', "$gen_build_man" or die "could not open $gen_bui +ld_man - $!"; my $found = 0; while ( my $line = <$GENMAN> ){ $found = 1 if $line =~ /genman\.pl/; } print "genman.pl not found in the file" if ! $found;` [download]	[reply] [d/l]
Re^4: How to find that a line "genman.py" exists in a python file by CountZero (Bishop) on Apr 01, 2012 at 19:20 UTC
Re: How to find that a line "genman.py" exists in a python file by JavaFan (Canon) on Apr 01, 2012 at 23:34 UTC
No need for Perl. `$ grep 'genman\.py' C:\python.py` [download] Or, to print all non-matching lines: `$ grep -v 'genman\.py' C:\python.py` [download]	[reply] [d/l] [select]
Re^2: How to find that a line "genman.py" exists in a python file by ramlight (Friar) on Apr 02, 2012 at 12:42 UTC
or, if the OP happens to be on Windows, findstr will do the same thing: `findstr /c:"genman.py" C:\python.py findstr /v /c:"genman.py" C:\python.py` [download]	[reply] [d/l]