python删除列表重复值_从Python列表中删除虚假值

r囧r小猫 2023-03-05 12:56 67阅读 0赞

python删除列表重复值

In python, the values that evaluate to False are considered Falsy values. The values are False, None, 0 and "".

在python中，评估为False的值被视为Falsy值。 值为False ， None ， 0和“” 。

Here, we are implementing a python program to remove the falsy values from a string. To remove these values we are using filter() method, it will filter out the falsy values.

在这里，我们正在实现一个python程序，以从字符串中删除伪造的值。 为了删除这些值，我们使用filter()方法，它将滤除伪造的值。

**Example:**

**例：**

Input:
        [10, 20, 0, 30, 0, None]
    
        Output:
        [10, 20, 30]
    
        Input: 
        [False, None, 0, "", "Hello", 10, "Hi!"]
        
        Output: 
        ['Hello', 10, 'Hi!']

**Program:**

**程序：**

# Remove falsy values from a list in Python 
    def newlist(lst):
      return list(filter(None, lst))
    
    # main code
    list1 = [10, 20, 0, 30, 0, None]
    list2 = [40, False, "Hello", "", None]
    list3 = [False, None, 0, "", "Hello", 10, "Hi!"]
    
    # printing original strings
    print("list1: ", list1)
    print("list2: ", list2)
    print("list3: ", list3)
    
    # removing falsy values and printing
    print("newlist(list1): ", newlist(list1))
    print("newlist(list2): ", newlist(list2))
    print("newlist(list3): ", newlist(list3))

**Output**

**输出量**

list1:  [10, 20, 0, 30, 0, None]
    list2:  [40, False, 'Hello', '', None]
    list3:  [False, None, 0, '', 'Hello', 10, 'Hi!']
    newlist(list1):  [10, 20, 30]
    newlist(list2):  [40, 'Hello']
    newlist(list3):  ['Hello', 10, 'Hi!']

> 翻译自: [https://www.includehelp.com/python/remove-falsy-values-from-a-list.aspx][https_www.includehelp.com_python_remove-falsy-values-from-a-list.aspx]

python删除列表重复值

[https_www.includehelp.com_python_remove-falsy-values-from-a-list.aspx]: https://www.includehelp.com/python/remove-falsy-values-from-a-list.aspx