; is not used, use spaces instead!
If you wanna 2 or more commands in 1 line, you can use ; to separate them.
Tab size usually is 4.
Lines can be broken with just an Enter, you also use \\\\ between the lines if you want.
From Python 3.6, you can use 1_000_000 for the number 1000000.
from __future__ import <package> allows current version of python to use <package> which is only available in the "future" version of python.
if __name__ == "__main__": determines the main running file of codes. The codes inside this command only run if the file containing it is the main executed file! (read more)
If we don't need to mention some variable, use _:
for _ in range(2):
print("Thi")
Thi
Thi
a, b = b, a
# Clear (without confirmation) a variable from workspace
del <var>
%reset_selective <var>
# Check if available and then delete
if '<var>' in globals(): del <var>
# use locals() inside a def
# Clear all variables
%reset # with confirmation
%reset -f # without confirmation