steave ray posted

TypeError: format() argument after must be a mapping, not str in Python**


print('{0} {1} {0!r}'.format(**'abrakadabara'))

i am formating string but i prompted with this error


TypeError: format() argument after ** must be a mapping, not str

you should use * instead of ** at format function , see below code :


print('{0} {1} {0!r}'.format(*'abrakadabara'))

will print


a b 'a'

so if suppose if you have


abc = {'a': 'A', 'b': 'B'}
print('{a} {b} {a!r}'.format(**abc))

in above code with ** , can Access arguments’ attributes which is a , b in our case so result is


A B 'A'

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