CODEWITHSUNDEEP
pythondictionary
ziggy
ziggy

Reputation: 1538

Python split dictionary key at comma

I have a dictionary called muncounty- the keys are municipality, county. separted by a comma and the value is a zip code 

 muncounty['mun'+','+'county'] = 12345

My goal is to split the keys at the comma separating the mun and county and only extract the mun.

I have tried 

muncounty.keys().split(',')

Upvotes: 0

Views: 11001

Answers (5)

Roberto Alcantara
Roberto Alcantara

Reputation: 79

Well, verbose mode for that:

muncounty = {}
muncounty['mun'+','+'county'] = 12345
muncounty['mun2'+','+'county2'] = 54321

l = []
for i in muncounty:
    l.append(i)

muns = []

for k in l:
    muns.append(k.split(',')[0])

But dude... this is a really bad way to store mun/countries ;-)

Upvotes: 0

Markus
Markus

Reputation: 3357

[x.split(',')[0] for x in muncounty.keys()]

But I would recommend to store your key as tuple (municipality, county).

Upvotes: 0

Jan Zeiseweis
Jan Zeiseweis

Reputation: 3738

You could use map and a lambda function.

di = {'a.b':1}
map(lambda k: k.split('.'), di.keys())

Upvotes: 0

Karoly Horvath
Karoly Horvath

Reputation: 96258

You need some kind of looping, e.g. a list comprehension:

[key.split(',') for key in muncounty.keys()]

Upvotes: 2

Pep_8_Guardiola
Pep_8_Guardiola

Reputation: 5252

You're question and example code isn't very clear, but I think what you want is this:

for key in muncounty.keys():
    mun, county = key.split(',')

Your current code is trying to perform split on a list, which you quite rightly point out can't be done. What the code above does is go through each key, and performs the split on it individually.

Upvotes: 0

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