Python - 删除带有数字的行

给定一个矩阵，删除具有整数实例的行。

Input : test_list = [[4, ‘Gfg’, ‘best’], [‘gfg’, 5, ‘is’, ‘best’], [3, 5], [‘GFG’, ‘Best’]] 
Output : [[‘GFG’, ‘Best’]] 
Explanation : All rows with numbers are removed.

Input : test_list = [[4, ‘Gfg’, ‘best’], [‘gfg’, 5, ‘is’, ‘best’], [3, 5], [‘GFG’, ‘Best’, 1]] 
Output : [] 
Explanation : All rows with numbers are removed. No list left. 

方法 #1：使用 any() + 列表推导式

在这里，我们在任何行中使用any()检查任何整数元素，并使用列表理解来执行迭代任务。

Python3

# Python3 code to demonstrate working of
# Remove rows with Numbers
# Using list comprehension + any
  
# initializing lists
test_list = [[4, 'Gfg', 'best'], [
    'gfg', 'is', 'best'], [3, 5], ['GFG', 'Best']]
  
# printing original lists
print("The original list is : " + str(test_list))
  
# using isinstance to check for integer and not include them
res = [sub for sub in test_list if not any(
    isinstance(ele, int) for ele in sub)]
  
# printing result
print("The filtered rows : " + str(res))

输出：

The original list is : [[4, ‘Gfg’, ‘best’], [‘gfg’, ‘is’, ‘best’], [3, 5], [‘GFG’, ‘Best’]]
The filtered rows : [[‘gfg’, ‘is’, ‘best’], [‘GFG’, ‘Best’]]

方法 #2：使用 filter() + lambda + any()

在此，我们使用lambda和filter()执行过滤任务， any()的使用方式与上述方法类似。

蟒蛇3

# Python3 code to demonstrate working of
# Remove rows with Numbers
# Using filter() + lambda + any()
  
# initializing lists
test_list = [[4, 'Gfg', 'best'], [
    'gfg', 'is', 'best'], [3, 5], ['GFG', 'Best']]
  
# printing original lists
print("The original list is : " + str(test_list))
  
# using isinstance to check for integer and not include them
# filter() used to filter with lambda fnc.
res = list(filter(lambda sub: not any(isinstance(ele, int)
                                      for ele in sub), test_list))
  
# printing result
print("The filtered rows : " + str(res))

输出：

The original list is : [[4, ‘Gfg’, ‘best’], [‘gfg’, ‘is’, ‘best’], [3, 5], [‘GFG’, ‘Best’]]
The filtered rows : [[‘gfg’, ‘is’, ‘best’], [‘GFG’, ‘Best’]]