CODEWITHSUNDEEP
python
jldupont
jldupont

Reputation: 96736

compile python .py file without executing

Is there a way to compile a Python .py file from the command-line without executing it?

I am working with an application that stores its python extensions in a non-standard path with limited permissions and I'd like to compile the files during installation. I don't need the overhead of Distutils.

Upvotes: 57

Views: 97510

Answers (6)

ebk
ebk

Reputation: 616

In addition to choose the output location of pyc (by @Jensen Taylor's answer), you can also specify a source file name you like for traceback if you don't want the absolute path of py file to be written in the pyc:

python -c "import py_compile; py_compile.compile('src.py', 'dest.pyc', 'whatever_you_like')"

Though "compileall -d destdir" can do the trick too, it will limit your working directory sometimes. For example, if you want source file name in pyc to be "./src.py", you have to move working directory to the folder of src.py, which is undesirable in some cases, then run something like "python -m compileall -d ./ ."

Upvotes: 2

bluszcz
bluszcz

Reputation: 4128

Yes, there is module compileall. Here's an example that compiles all the .py files in a directory (but not sub-directories):

python -m compileall -l myDirectory

Upvotes: 21

Jensen Taylor
Jensen Taylor

Reputation: 11

I would say something like this, so you can compile it to your chosen location:

import py_compile
py_compile(filename+".py",wantedlocation+wantedname+".pyc")

As I have now done in my Python project on github.com/lolexorg/Lolex-Tools

Upvotes: 1

Mirko N.
Mirko N.

Reputation: 10567

In fact if you're on Linux you may already have a /usr/bin/py_compilefiles command in your PATH. It wraps the the py_compile module mentioned by other people. If you're not on Linux, here's the script code.

Upvotes: 5

Javier
Javier

Reputation: 4623

$ python -c "import py_compile; py_compile.compile('yourfile.py')"

or

$ python -c "import py_compile; py_compile.compileall('dir')"

Upvotes: 4

Roger Pate
Roger Pate

Reputation:

The py_compile module provides a function to generate a byte-code file from a source file, and another function used when the module source file is invoked as a script.

python -m py_compile fileA.py fileB.py fileC.py

Upvotes: 87

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