Getting values from dictionary using user input

Question

Bavaria={'Number_of_solders':1500, 'Strength':5}
print ('Which country is attacking? ')
a=input()
print ('Number of attacking forces of '+a+' is '+a['Number_of_soldiers']+' men!')

Error:

Traceback (most recent call last):
                                  line 6, in <module>
    print ('Number of attacking forces of '+a+' is '+a['Number_of_soldiers']+' men!')
TypeError: string indices must be integers

How can retrieve value or key from the dictionary, name of which is given by user?

because your trying to lookup the a variable, which is a string. — notorious.no
– notorious.no, Commented Jul 27, 2014 at 23:25

Burhan Khalid · Accepted Answer · 2014-07-27 23:24:13Z

1

You need to fix your dictionary so that the name of the country is also a key:

countries = {'bavaria': {'soldiers': 1500, 'strength': 5}}

Now you can ask the user for the country:

a = input('Which country is attacking? ')
stats = countries.get(a.lower())
if stats:
    print('Number of soliders: {0[soldiers]} men!'.format(stats))
else:
    print('Sorry no stats for {0}'.format(a))

answered Jul 27, 2014 at 23:24

Burhan Khalid

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