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Tilak Muruduru Divakar
6,459 PointsPassing unpacked keys/values into a string
>>> my_dict = {'name': 'Kenneth'}
>>> "Hi, my name is {name}!".format(**my_dict)
"Hi, my name is Kenneth!"
Why do we have to pass "name" inside {}?
2 Answers
Chris Freeman
Treehouse Moderator 68,457 PointsGood question! Using **my_dict gets translated to the key/value pair name='Kenneth'. When used as an argument to the format method, a named field is expected to match the keyword argument "name".
Tilak Muruduru Divakar
6,459 PointsThanks!
Tilak Muruduru Divakar
6,459 PointsTilak Muruduru Divakar
6,459 PointsIs there a particular reason why we need to pass key/value pairs?
It doesn't work if I do this: name = "Tilak" print "My name is {name}".format(name)
I get a key error: Traceback (most recent call last): File "<stdin>", line 1, in <module> KeyError: 'name'
Chris Freeman
Treehouse Moderator 68,457 PointsChris Freeman
Treehouse Moderator 68,457 PointsAs defined in the str.format examples, a key/value pair is only required when the format fields are named.
The error references that the named field "{name}" doesn't have a keyword "name" in the format arguments. If you only wish to use the positional argument
name, then use no field name or a numbered field name: