Python Set clear()用法及代碼示例

設置 clear() 方法

clear() 方法用於清除/刪除集合中的所有元素。

用法:

    set_name.clear()

參數：

• 它不接受任何參數。

返回值：

這個方法的返回類型是None。

例：

# Python Set clear() Method with Example

# declaring a set
cities = {"New Delhi", "Mumbai", "Indore", "Gwalior"}

# printing set before clearing the element
print("cities = ", cities)

# clearing all elements
cities.clear()

# printing set after clearing the element
print("cities = ", cities)

輸出

cities =  {'Indore', 'Gwalior', 'New Delhi', 'Mumbai'}
cities =  set()