Python好用的代码
时间: 2023-11-05 18:08:56 浏览: 30
以下是一些 Python 中常用的代码片段:
1. Hello World
```python
print("Hello, World!")
```
2. 计算器
```python
num1 = float(input("Enter first number: "))
operator = input("Enter operator: ")
num2 = float(input("Enter second number: "))
if operator == "+":
print(num1 + num2)
elif operator == "-":
print(num1 - num2)
elif operator == "*":
print(num1 * num2)
elif operator == "/":
print(num1 / num2)
else:
print("Invalid operator")
```
3. 列表排序
```python
list1 = [5, 2, 8, 1, 6]
list1.sort()
print(list1) # Output: [1, 2, 5, 6, 8]
```
4. 循环
```python
for i in range(1, 11):
print(i)
# Output:
# 1
# 2
# 3
# ...
# 10
```
5. 文件读写
```python
# 写入文件
with open("file.txt", "w") as f:
f.write("Hello, World!")
# 读取文件
with open("file.txt", "r") as f:
print(f.read()) # Output: "Hello, World!"
```
这些代码片段只是 Python 中的一小部分,但它们可以帮助你开始编写 Python 代码。