# Python 程序：使用匿名函數顯示 2 的冪 > 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，您將學習使用 Python 匿名函數顯示整數 2 的冪。 要理解此示例，您應該了解以下 [Python 編程](/python-programming "Python tutorial")主題： * [Python `for`循環](/python-programming/for-loop) * [Python 匿名/ Lambda 函數](/python-programming/anonymous-function) * * * 在下面的程序中，我們使用了內置函數`map()`內的匿名（lambda）函數來查找 2 的冪。 ## 源代碼 ```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]) ``` **輸出** ```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**：要測試不同數量的項，請更改`terms`變量的值。