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

25 votes238 views6 answers
Python online compiler
Python
0 vote269 views1 answer
How to select the shortest item in a python list
Python
0 vote230 views1 answer
Shebnag python
Python
22 votes224 views6 answers
Python palindrome program
Python
0 vote238 views1 answer
Send operator by parameter python
Python
1 vote256 views1 answer
Date.month date time
Python
0 vote215 views1 answer
Tensorboard 2.1.0 has requirement grpcio>=1.24.3, but you'll have grpcio 1.15.0 which is incompatible
Python
2 votes243 views2 answers
Python convert hex to binary
Python
1 vote252 views1 answer
How to change a header in pandas
Python
3 votes233 views3 answers
Range(n,n) python
Python