Python star sign before list

Inside a function header:

* collects all the positional arguments in a tuple.

** collects all the keyword arguments in a dictionary.

>>> def functionA(*a, **kw):
       print(a)
       print(kw)

>>> functionA(1, 2, 3, 4, 5, 6, a=2, b=3, c=5)
(1, 2, 3, 4, 5, 6)
{'a': 2, 'c': 5, 'b': 3}


In a function call:

* unpacks a list or tuple into position arguments.

** unpacks a dictionary into keyword arguments.
>>> lis=[1, 2, 3, 4]
>>> dic={'a': 10, 'b':20}
>>> functionA(*lis, **dic)  #it is similar to functionA(1, 2, 3, 4, a=10, b=20)
(1, 2, 3, 4)
{'a': 10, 'b': 20}

Source: stackoverflow.com

Similar codes

1 vote202 views1 answer
Why do we use graphs?
Python
78 votes199 views4 answers
Read json
Python
2 votes222 views3 answers
Pandas select by list of values in column
Python
4 votes231 views1 answer
Django is null
Python Django
0 vote234 views1 answer
Sieve of eratosthenes python
Python
0 vote217 views1 answer
.replace pandas in for loop
Python
30 votes224 views3 answers
Python read scv
Python
1 vote210 views1 answer
Discord.py commands not working
Python
0 vote226 views1 answer
Purge python3.y from every place in my path
Python
-1 vote200 views1 answer
Python graphql client
Python