Append List Inside Dictionary With Update

if i have below dictionary with one of the element is list, as follow: myDict = dict(a=1, b='2', c=[]) how do I update myDict and at the same time append c e.g. myDict .update(a=

Solution 1:

You can't use append within update because append is trying to perform an inplace operation on the dict value. Try list concatenation instead:

d = dict(a=1, b='2', c=[])
d.update(a='one', b=2, c=d['c'] + ['newValue'])
print(d)
{'a': 'one', 'b': 2, 'c': ['newValue']}

Or:

d.update(a='one', b=2, c=d['c'] + ['newValue'] + ['anotherValue'])