and
or
not
True
False
%
in
upper
lower
capitalize
startswith
endswith
isalpha
isdigit
isupper
islower
strip
lstrip
rstrip
count
find
rfind
replace
+
append
extend
insert
pop
reverse
sort
join
split
index
remove
add
discard
issubset
issuperset
isdisjoint
keys
values
items
update
if else
else
for
break
continue
while
range
next
global
empty_matrix
k
np.where
np.inf
hstack
vstack
flip