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

10 votes162 views6 answers
Pandas if else
Python
0 vote190 views1 answer
Form is undefined flask
Python Flask
2 votes288 views1 answer
Python split string by tab
Python
39 votes152 views3 answers
ModuleNotFoundError: No module named 'matplotlib'
Python
1 vote139 views1 answer
Python get timestamp 2020-04-23T12:00:00Z
Python
0 vote142 views1 answer
Dataproc initialization_actions error
Python
2 votes155 views4 answers
How to do fibonacci sequence in python
Python
1 vote102 views4 answers
Create static library
Python
2 votes163 views2 answers
If else pandas dataframe
Python
0 vote133 views1 answer
Draw bounding box matplotlib
Python