PYTHON

not in python

x = 10
if not x:
    print("True")
else:
    print("False")

python not in

arr = ['a','b','c','d','e','f']

if 'g' not in arr:
    print('g is not in the list')

is not in python

li = [1,2,'a','b']
if 'hello' not in li:
    print('hello is not in the list')

python not in

#Example of usage of python "in" and "not in" 
myVar = "Hello Green"
if "H" in myVar:
	print("H is in the string")
 elif "H" not in myVar:
  	print("H is not in strng")

not in python

# False
print(not(1 == 1))

# True
print(not(1 == 2))

python is not

result is not None

python is not operator

x is not y
x != y

in and not in operators python

exactly on which containers can the in operator be applied?
Generally the rule of thumb is (not a fact but a doctrine):
if container is iterable => in can be applied 
 ex. of such containers- (str, list, tuple, set and dict)
#note1:
by iterable i mean we can iterate like this:
for x in list_object: or for y in dict_obj:
#note2:
not in operator just have opposite definition to that of in 
but above rule of thumb is true for not in as well ofcourse.