Python Operators and Expressions

1# Addition
2x = 5 + 3  # Result: 8
3
4# Subtraction
5y = 10 - 4  # Result: 6
6
7# Multiplication
8z = 3 * 4  # Result: 12
9
10# Division
11a = 15 / 3  # Result: 5.0 (always returns float)
12
13# Floor Division
14b = 17 // 3  # Result: 5 (discards decimal part)
15
16# Modulus (remainder)
17c = 17 % 3  # Result: 2
18
19# Exponentiation
20d = 2 ** 3  # Result: 8 (2 raised to power 3)
21
22print(f"x: {x}, y: {y}, z: {z}")
23print(f"a: {a}, b: {b}, c: {c}, d: {d}")

1# Equal to
2print(5 == 5)  # True
3
4# Not equal to
5print(5 != 3)  # True
6
7# Greater than
8print(7 > 3)   # True
9
10# Less than
11print(2 < 8)   # True
12
13# Greater than or equal to
14print(5 >= 5)  # True
15
16# Less than or equal to
17print(4 <= 3)  # False
18
19# Compare strings
20print("hello" == "hello")  # True
21print("hello" < "world")   # True (alphabetical comparison)

1# and operator
2x = 5
3print(x > 0 and x < 10)  # True (both conditions are true)
4
5# or operator
6y = 15
7print(y < 0 or y > 10)   # True (at least one condition is true)
8
9# not operator
10z = True
11print(not z)             # False (inverts the boolean value)
12
13# Complex conditions
14age = 25
15has_license = True
16can_drive = age >= 18 and has_license
17print(f"Can drive: {can_drive}")  # True

1# Simple assignment
2x = 10
3
4# Add and assign
5x += 5      # Same as: x = x + 5
6print(x)    # 15
7
8# Subtract and assign
9x -= 3      # Same as: x = x - 3
10print(x)    # 12
11
12# Multiply and assign
13x *= 2      # Same as: x = x * 2
14print(x)    # 24
15
16# Divide and assign
17x /= 4      # Same as: x = x / 4
18print(x)    # 6.0

1# is operator
2x = [1, 2, 3]
3y = [1, 2, 3]
4z = x
5
6print(x is z)      # True (same object)
7print(x is y)      # False (different objects)
8print(x == y)      # True (same value)
9
10# is not operator
11print(x is not y)  # True (different objects)

1# in operator
2fruits = ["apple", "banana", "orange"]
3print("apple" in fruits)       # True
4print("grape" in fruits)       # False
5
6# not in operator
7print("grape" not in fruits)   # True
8
9# String membership
10text = "Hello, World!"
11print("Hello" in text)         # True
12print("Python" in text)        # False

1# Example of operator precedence
2result = 2 + 3 * 4    # Multiplication happens first
3print(result)         # 14
4
5# Use parentheses to control order
6result = (2 + 3) * 4  # Addition happens first
7print(result)         # 20
8
9# Complex expression
10x = 5
11y = 3
12z = 2
13result = x + y * z ** 2 - (x + y) / z
14print(result)         # 17.0