shebang problem "/usr/bin/env python2"

klonuo · 10-20-2011, 01:21 PM

Hi,

this is not much developer problem but perhaps bug report and it seemed to me more appropriate to report it here then in other subforums:

I installed latest Calibre (0.8.22) from source on Ubuntu 11.04. When I tried to launch it error was thrown, similar to this line:

/usr/bin/env python2 - file not found

as I recognized shebang I checked Calibre launcher python scripts in /usr/bin and found that it's literally written like that:

#!/usr/bin/env python2

I removed shebang last character from all Calibre scripts and it started to work

Cheers

kovidgoyal · 10-20-2011, 08:12 PM

calibre requires python2 not python3. The shebang is the way I ensure it runs with python2. Some distributions do not provide python2, inwhich case you can do it manually, by symlinking python to python2

klonuo · 10-21-2011, 11:08 AM

I have one Python - 2.7 and didn't notice any script/program that uses python2 or python3 in shebang.

OK, I thought only to inform you. Maybe you can add that symlink is required as in Ubuntu at least, python2 is not symlinked to python 2.x

Cheers

10-20-2011, 01:21 PM	#1
klonuo Member Posts: 15 Karma: 10 Join Date: Dec 2010 Device: none	shebang problem "/usr/bin/env python2" Hi, this is not much developer problem but perhaps bug report and it seemed to me more appropriate to report it here then in other subforums: I installed latest Calibre (0.8.22) from source on Ubuntu 11.04. When I tried to launch it error was thrown, similar to this line: /usr/bin/env python2 - file not found as I recognized shebang I checked Calibre launcher python scripts in /usr/bin and found that it's literally written like that: #!/usr/bin/env python2 I removed shebang last character from all Calibre scripts and it started to work Cheers

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10-20-2011, 08:12 PM	#2
kovidgoyal creator of calibre Posts: 45,349 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	calibre requires python2 not python3. The shebang is the way I ensure it runs with python2. Some distributions do not provide python2, inwhich case you can do it manually, by symlinking python to python2

10-21-2011, 11:08 AM	#3
klonuo Member Posts: 15 Karma: 10 Join Date: Dec 2010 Device: none	I have one Python - 2.7 and didn't notice any script/program that uses python2 or python3 in shebang. OK, I thought only to inform you. Maybe you can add that symlink is required as in Ubuntu at least, python2 is not symlinked to python 2.x Cheers

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