Python – 字符串列表中存在子字符串

给定子字符串列表和字符串列表，检查每个子字符串是否存在于列表中的任何字符串中。

Input : test_list1 = [“Gfg”, “is”, “best”], test_list2 = [“I love Gfg”, “Its Best for Geeks”, “Gfg means CS”]
Output : [True, False, False]
Explanation : Only Gfg is present as substring in any of list String in 2nd list.

Input : test_list1 = [“Gfg”, “is”, “best”], test_list2 = [“I love Gfg”, “It is Best for Geeks”, “Gfg means CS”]
Output : [True, True, False]
Explanation : Only Gfg and is are present as substring in any of list String in 2nd list.

方法#1：使用循环

这是可以执行此任务的粗暴方式。在此，我们为，列表中的每个元素检查它是否是任何其他列表元素的子字符串。

Python3

# Python3 code to demonstrate working of 
# Substring presence in Strings List
# Using loop
  
# initializing lists
test_list1 = ["Gfg", "is", "Best"]
test_list2 = ["I love Gfg", "Its Best for Geeks", "Gfg means CS"]
  
# printing original lists
print("The original list 1 : " + str(test_list1))
print("The original list 2 : " + str(test_list2))
  
# using loop to iterate
res = []
for ele in test_list1 :
  temp = False
    
  # inner loop to check for
  # presence of element in any list
  for sub in test_list2 :
    if ele in sub:
      temp = True
      break    
  res.append(temp)
    
# printing result 
print("The match list : " + str(res))

输出

The original list 1 : ['Gfg', 'is', 'Best']
The original list 2 : ['I love Gfg', 'Its Best for Geeks', 'Gfg means CS']
The match list : [True, False, True]

方法 #2：使用列表理解 + any()

上述功能的组合可以用来解决这个问题。在此，我们使用 any() 检查任何子列表，并使用列表推导来执行迭代。

Python3

# Python3 code to demonstrate working of 
# Substring presence in Strings List
# Using list comprehension + any()
  
# initializing lists
test_list1 = ["Gfg", "is", "Best"]
test_list2 = ["I love Gfg", "Its Best for Geeks", "Gfg means CS"]
  
# printing original lists
print("The original list 1 : " + str(test_list1))
print("The original list 2 : " + str(test_list2))
  
# any() reduces a nesting
# checks for element presence in all Substrings
res = [True if any(i in j for j in test_list2) else False for i in test_list1]
  
# printing result 
print("The match list : " + str(res))

输出

The original list 1 : ['Gfg', 'is', 'Best']
The original list 2 : ['I love Gfg', 'Its Best for Geeks', 'Gfg means CS']
The match list : [True, False, True]