convert .py to .pyc during run time to make changes take effect

[TarunMakhija]

Hi,

I need to modify some properties that I maintain in a file called config.py.

How do I convert config.py to config.pyc programmatically during run time to ensure that the changes i made during a run time take effect.

what is happening right now is that: after i make changes to config.py during run time, the changes do not take effect. However, after i stop the application and run it again the changes i made the last time take effect.

Please let me know how to work around this.

Thanks,
Tarun

 

[ericbrunson]

If you import a file the interpretter should try to compile the .py into a .pyc *if* the .py is newer than the .pyc. Does the process running have permissions to write the .pyc?

 

[TarunMakhija]

I tried using import config.py within the program after making changes to config.py programmatically using file.write(). The problem still remained.

Also, I am modifying the .py file (not .pyc). Have the rights to modify the .py file.

I also tried the following using the imp and codeop modules:

#write into config.py
file = open(os.path.join(os.getcwd(),"config.py"),'w')
file.write(search)
file.write("\n")
file.write("subjects=[crmTerms]")
file.close()

try:
fp, pathname, description = imp.find_module("config")
imp.load_module("config", fp, pathname, description)
codeop.compile_command("config.py")

import config
except:
print FAILED

If someone is getting where exactly I am going wrong, please let me know,

Thanks
Tarun M.

 

[ericbrunson]

Have you already done an 'import config' before this code is executed?

 

[TarunMakhija]

yes i have imported it before as well

 

[TarunMakhija]

Thanks .... For hitting the nail right on the head!
It solves my problem

I removed the import statement from all my programs which i was doing at the module level. And used them precisely where i need them

Its working fine now. Thanks!
Tarun M.

 

[ericbrunson]

Yep, python keeps a list of imported modules so it doesn't try to import them more than once. There is a way to "re-import" a module, but it looks like you've taken care of your issues. Glad I could be of help.