Question

I have a python file named “parameters.py” within this:

good = '100'
bad = '110'
ok = '120'

I want to import this file, and to find the key name by it’s value.

something like:

import parameters
for k, v in parameters.iteritems():
    if v == '110':
        print str(k)

this not really works (method has no member iteritems…)

thanks for helpers!

Answer 1

You can loop through dir(parameters) to get the keys, or vars(parameters).iteritems(). You will have to skip some members though:

>>> dir(settings)
['__builtins__', '__doc__', '__file__', '__name__', '__package__', 'bad', 'good', 'ok']

For practical use, I’d recommend wrapping good, bad and ok in a dict stored in the parameters module:

# parameters.py

HAM = {  # or whatever this represents
    good: '100',
    bad: '110',
    ok: '120',
}