関連ワード:  python search a substring in a string    python find a substring in a string    python check for a substring in a string    python find a substring in a list of strings    python program to find a substring in a string    python code to find a substring in a string    python find index of a substring in a string    python find all substrings in a string    python find all occurrences of a substring in a string    python find the position of a substring in a string  
結果 : python search a substring in a string