Python collections cheat sheet

sum_of_elements  = sum(<collection>)
elementwise_sum  = [sum(pair) for pair in zip(list_a, list_b)]
sorted_by_second = sorted(<collection>, key=lambda el: el[1])
sorted_by_both   = sorted(<collection>, key=lambda el: (el[1], el[0]))
flatter_list     = list(itertools.chain.from_iterable(<list>))
product_of_elems = functools.reduce(lambda out, el: out * el, <collection>)
list_of_chars    = list(<str>)

Source: gto76.github.io

Similar codes

0 vote129 views1 answer
Load dataset from seaborn
Python
0 vote133 views1 answer
Loop append to list python
Python
0 vote128 views1 answer
Pylatex subsection
Python
0 vote116 views1 answer
Pygame mirror image
Python
1 vote176 views1 answer
Message tags in django
Python Django
-3 votes131 views1 answer
Get path of open file python
Python
1 vote125 views1 answer
Flask error f = open(f'{getcwd()}/haikus/{haiku}',"r") ^ SyntaxError: invalid syntax
Python
2 votes116 views2 answers
Bot ping discord.py
Python
0 vote160 views1 answer
How to set up flash message in html template in flask app
Python Flask
1 vote144 views1 answer
Geometric progression in python
Python