Quick Start Code Guide to Python Programming Basics

Take you to quickly get started with the basic code of Python programming

Python is an easy-to-learn and powerful programming language that is widely used in data analysis, machine learning, and the Web development and other fields. If you are a beginner, this article will take you quickly into Python programming and provide some basic code examples.

1. Output Hello World!
   In Python, use the print function to output the content to the console. Let's start by outputting a classic Hello World.

print("Hello World!")

2. Variables and data types
   In Python, you can use variables to save data. Python has several basic data types, including integers, floating point numbers, strings, and Boolean values.

# 整数
a = 10
print(a)

# 浮点数
b = 3.14
print(b)

# 字符串
c = "Hello"
print(c)

# 布尔值
d = True
print(d)

3. Operators
   Python provides some common operators for performing arithmetic operations, logical operations, and comparison operations.

# 算术运算
a = 10
b = 5

print(a + b)  # 加法
print(a - b)  # 减法
print(a * b)  # 乘法
print(a / b)  # 除法
print(a % b)  # 取余
print(a ** b) # 幂运算

# 逻辑运算
c = True
d = False

print(c and d) # 与运算
print(c or d)  # 或运算
print(not d)   # 非运算

# 比较运算
a = 10
b = 5

print(a == b)  # 等于
print(a != b)  # 不等于
print(a > b)   # 大于
print(a < b)   # 小于

4. Conditional statements
   In Python, you can use conditional statements to execute different blocks of code based on different situations.

a = 10

if a > 0:
    print("a是正数")
elif a < 0:
    print("a是负数")
else:
    print("a是零")

5. Loop
   Python provides several loop structures for repeatedly executing a piece of code.

# for循环
for i in range(5):
    print(i)

# while循环
a = 0
while a < 5:
    print(a)
    a += 1

6. Function
   A function is a reusable block of code. In Python, you can define your own functions and call them when needed.

def say_hello(name):
    print("Hello, " + name + "!")
    
say_hello("Alice")

The above are some basic code examples of Python programming. I hope that through this article, you can have a preliminary understanding of the basics of Python and start your programming journey. Happy programming!

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