CODEWITHSUNDEEP
python
chrise
chrise

Reputation: 4253

mapping functions in dict

I want to run python functions from linux command prompt. So, I define a functions and dictionary of mappings from linux inputs to the functions to be exectured. So,eg.

def help():
    print(...)

def dostuff():
    do sth

functions ={
    'help': help()'
    ''dostuff' : dostuff()
    }

def parsecommand():
    return functions[sys.argv]

if __name__='__main__':
    parsecommand()

When I now run a function from Linux, [python filename.py] help the problem now is that python runs through all the functions in the dictionary and executes them when building the dictionary. How can I avoid this? Or what would be a better way to structure this?

Upvotes: 0

Views: 94

Answers (3)

StoryTeller - Unslander Monica
StoryTeller - Unslander Monica

Reputation: 170074

Remove the () next to the function names in the dictionary.

functions ={
  'help': help
  'dostuff' : dostuff
}

You'd than be able to run the functions like so:

return functions[sys.argv[1]]()

Upvotes: 2

Kenneth Cheng
Kenneth Cheng

Reputation: 456

functions = {
    'help': help,
    'dostuff': dostuff
}

def parsecommand():
    return functions[sys.argv]()

Upvotes: 0

NPE
NPE

Reputation: 500357

Change your dict like so:

functions = {
    'help': help,
    'dostuff' : dostuff
    }

This will allow you to call the functions in the following manner:

functions[sys.argv[1]]()

Upvotes: 3

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