# Python 程序：使用匿名函数显示 2 的幂

> 原文： [https://www.programiz.com/python-programming/examples/power-anonymous](https://www.programiz.com/python-programming/examples/power-anonymous)

#### 在此程序中，您将学习使用 Python 匿名函数显示整数 2 的幂。

要理解此示例，您应该了解以下 [Python 编程](/python-programming "Python tutorial")主题：

*   [Python `for`循环](/python-programming/for-loop)
*   [Python 匿名/ Lambda 函数](/python-programming/anonymous-function)

* * *

在下面的程序中，我们使用了内置函数`map()`内的匿名（lambda）函数来查找 2 的幂。

## 源代码

```py
# Display the powers of 2 using anonymous function

terms = 10

# Uncomment code below to take input from the user
# terms = int(input("How many terms? "))

# use anonymous function
result = list(map(lambda x: 2 ** x, range(terms)))

print("The total terms are:",terms)
for i in range(terms):
   print("2 raised to power",i,"is",result[i]) 
```

**输出**

```py
The total terms are: 10
2 raised to power 0 is 1
2 raised to power 1 is 2
2 raised to power 2 is 4
2 raised to power 3 is 8
2 raised to power 4 is 16
2 raised to power 5 is 32
2 raised to power 6 is 64
2 raised to power 7 is 128
2 raised to power 8 is 256
2 raised to power 9 is 512

```

**注意**：要测试不同数量的项，请更改`terms`变量的值。