関連ワード:  python check for certain character in string    python check for specific characters in string    python check for a letter in string    python check for a character in a string    python check if a character in string    python check character in string at index    python check for repeating characters in string    python check for special characters in string    python check for invalid characters in string    python check if a letter in string  
結果 : python check for certain character in string