在某个子字符串之后获取字符串

Question

How can I get a string after a certain substring:

strings = ["Mayo", "Nice May", "nice May comes", "nice Mayo", "nice Mayo comes"]
substring = "May"

I want to get only the strings that have the word "May" in it and not just contain the sequence "May" .

I have tried these codes:

for x in strings:
    if "May" in x:
        print(x)

for x in strings:
    if x.find("May"):
        print(x)

I want:

Nice May                                                                                                                       

nice May comes

I get:

Mayo                                                                                                                               
Nice May                                                                                                                           
nice May comes                                                                                                                     
nice Mayo                                                                                                                          
nice Mayo comes                                                                                                                    
abcMayabc

Answer 1

Using split() , check if substring is in the elem of strings separated by spaces:

strings = ["Mayo", "Nice May", "nice May comes", "nice Mayo", "nice Mayo comes"]
substring = "May"

for x in strings:
    if substring in x.split(" "): print(x)

OUTPUT :

Nice May
nice May comes

Using list comprehension :

print([x for x in strings if substring in x.split()])

OUTPUT :

['Nice May', 'nice May comes']

Answer 2

Using Regex boundaries.

Ex:

import re

strings = ["Mayo", "Nice May", "nice May comes", "nice Mayo", "nice Mayo comes"]
substring = "May"

for i in strings:
    if re.search(r"\b{}\b".format(substring), i):
        print(i)

Output:

Nice May
nice May comes