Learn to use Python operators proficiently: a comprehensive guide

Complete Guide to Python Operators: Learn to Use Various Operators Correctly

Introduction:
In Python, operators are used to perform various mathematical or Special symbols for logical operations. Being proficient in various operators can help us write code more efficiently. This article will systematically introduce various operators in Python and provide specific code examples for each operator to help readers better understand and use them.

1. Arithmetic operators
Arithmetic operators are used to perform basic mathematical operations. Mainly include addition ( ), subtraction (-), multiplication (), division (/), modulo (%) and exponentiation (*).

Code example:
a = 10
b = 3

print(a b) # Output: 13
print(a - b) # Output: 7
print(a * b) # Output: 30
print(a / b) # Output: 3.3333333333333335
print(a % b) # Output: 1
print(a ** b) # Output: 1000

2. Assignment operator
The assignment operator is used to assign values ​​to variables. Commonly used assignment operators in Python include =, =, -=, *=, /=, //= and %=, etc.

Code example:
a = 10
b = 3

a = b # Equivalent to a = a b
print(a) # Output: 13

a -= b # Equivalent to a = a - b
print(a) # Output: 10

a = b # Equivalent to a = a b
print(a) # Output: 30

a /= b # Equivalent to a = a / b
print(a) # Output: 10.0

a //= b # Equivalent to a = a // b
print(a) # Output: 3.0

a %= b # Equivalent to a = a % b
print(a) # Output: 0.0

3. Comparison operators
Comparison operators are used to compare the size of two values ​​or determine whether two values ​​are equal. Commonly used comparison operators include equality (==), inequality (!=), greater than (>), less than (=), less than or equal to (

Code example:
a = 10
b = 3

print(a == b) # Output: False
print(a != b) # Output ：True
print(a > b) # Output: True
print(a print(a >= b) # Output: True
print( a

4. Logical operators
Logical operators are used to operate on Boolean values. It mainly includes logical AND (and), logical OR (or) and logical NOT (not).

Code example:
a = True
b = False

print(a and b) # Output: False
print(a or b) # Output: True
print(not a) #Output: False

5. Bit operators
Bit operators are used to operate on binary numbers. Mainly include bitwise AND (&), bitwise OR (|), bitwise XOR (^), bitwise negation (~), left shift (>), etc. .

Code example:
a = 5 # Binary representation is 101
b = 3 # Binary representation is 011

print(a & b) # Output: 1, which is binary 001
print(a | b) # Output: 7, which is binary 111
print(a ^ b) # Output: 6, which is binary 110
print(~a) # Output: -6, which is Binary... 11111010 (complement representation)
print(a print(a >> 1) # Output: 2, which is binary 10

6. Membership operator
Membership operator is used to determine whether a value is a member of a sequence, such as a list, tuple or string. It mainly includes two forms: in and not in.

Code example:
a = [1, 2, 3, 4, 5]

print(2 in a) # Output: True
print(6 not in a ) # Output: True

7. Identity operator
The identity operator is used to compare whether two objects have the same memory address. It mainly includes two forms: is and is not.

Code example:
a = [1, 2, 3]
b = [1, 2, 3]
c = a

print(a is b) # Output: False
print(a is c) # Output: True
print(a is not b) # Output: True

8. Operator precedence
Various types in Python Operators have different precedence, and parentheses can be used to control the order in which expressions are evaluated. Generally, arithmetic operators have lower precedence and logical operators have higher precedence.

Code example:
a = 10
b = 3

result = a b * 2 # Prioritize multiplication calculation
print(result) # Output: 16

result = (a b) * 2 # Use parentheses to control the order of operations
print(result) # Output: 26

Conclusion:
This article systematically introduces various operators of Python. Including arithmetic operators, assignment operators, comparison operators, logical operators, bit operators, member operators and identity operators, etc. Through specific code examples, readers can better understand and apply these operators. The variables and values ​​​​in the code examples are only examples. Please modify and expand them according to the actual situation. I hope the content of this article will be helpful to the learning and application of Python!

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