operators

arithmetic

addition 3 = 2 + 1

subtraction 2 = 5 - 3

multiplication 6 = 3 * 2

exponentiation 8 = 2 ** 3

division 2 = 6 / 3

modulus 1 = 3 % 2

floor division 1 = 4 // 3 #the output is the floored integer

comparision

equal x == y

not equal  x != y

greater than x > y

less than x < y

greater than or equal x >= y

less than or equal x <= y

logical

and

or

not

is

object_1 is object_2

This will be True, if both objects are the same object, i.e. object_1 = object_2, but False, even if both only contain the same value! The equality of two variables is compared with ==, but that is not the same as the identity of two objects.

numpy array

.logical_and() #and in numpy for arrays

.logical_not() #notin numpy for arrays

.logical_or() #or in numpy for arrays

bitwise

& AND

| OR

^ XOR

~ NOT

<< zero fill left shift

>> zero fill right shift

membership

in

  for i in my_list:

    print(i)

  if x in my_list

  "my_key" in my_dictonary

not in

assignment

x = 2 ⇔ x = 2

x += 2 ⇔ x = x + 2

x -= 2 ⇔ x = x - 2

x *= 2 ⇔ x = x * 2

x **= 2 ⇔ x = x ** 2

x /= 2 ⇔ x = x / 2

x %= 2 ⇔ x = x % 2

x //= 2 ⇔ x = x // 2

x &= 2 ⇔ x = x & 2 (AND)

x |= 2 ⇔ x = 2 | 2 (OR)

x ^= 2 ⇔ x = x ^ 2 (XOR)

x <<= 2 ⇔ x = x << 2

x >>= 2 ⇔ x = x >> 2