CODEWITHSUNDEEP
linuxshell
AVA
AVA

Reputation: 2558

How to get python version in shell script?

Objective: to get python version in shell script

Observation:

[root@srvr0 ~]# python --version
Python 2.7.5

Code: 

export python_version=`python --version`
echo "\$python_version=$python_version"

Expected:

$python_version=Python 2.7.5

Actual:

$python_version=

Please help me getting python version in shell script.

Upvotes: 0

Views: 579

Answers (2)

L. Scott Johnson
L. Scott Johnson

Reputation: 4382

the --version writes to stderr, so:

export python_version=$(python --version 2>&1)

Upvotes: 2

Durgan
Durgan

Reputation: 111

The command output being in stderr rather than stdout really tripped me up for a while; definitely wasn't expected behavior for me.

Anyways, if anyone comes here trying to do this on Windows, you can do this:

for /f "USEBACKQ tokens=2" %G in (`"python --version 2>&1"`) do set pyVersion=%G

You'll then have a string like '2.7.18' in the pyVersion variable. Remember to expand %G to %%G if using it within a batch script.

Upvotes: 0

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