Using Python Docopt (for beautiful command-line interfaces) I recently had the problem of converting a list of tuples into a dictionary. In this post I’d like to document the solution I came up with…
"""
usage:
mytool [options]
options:
--foo-bar=PARAM1,PARAM2,... params to do stuff with
[default: key1.value1,key1.value2,key2.value2]
"""
from docopt import docopt
from collections import defaultdict
def run():
params = [tuple(param.strip().split('.')) for param in arguments["--foo-bar"].split(",")]
params = convert_tuple_list_to_dictionary(ignored_resources)
def convert_tuple_list_to_dictionary(list_of_tuple):
dictionary = defaultdict(list)
for k, v in list_of_tuple:
dictionary[k].append(v)
return dictionary
if __name__ == "__main__":
run()
This code is able to convert the parameter value string key1.value1,key1.value2,key2.value2 into the following dictionary:
{
'key1': ['value1', 'value2'],
'key2': ['value2']
}
If you know a leaner solution to solve this problem, please write a comment!