11/29 hw pa1 Link: https://youtu.be/HFomro6yubE?si=BGIc-XoCDyG6oGi3 # Python 字串索引好簡單 #索引運算符 credit_number = "1234-5678-9876-5432" #取得單一字元 first_char = credit_number[0] print("第一個字元:", first_char) second_char = credit_number[1] print("第二個字元:", second_char) #取得區間字元 first_four = credit_number[0:4] print("前四個字元:", first_four) #取得特定字元 last_one = credit_number[-1] print("最後一個字元:", last_one) last_two = credit_number[-2] print("最後一個字元:", last_two)