作者：许轩豪         更新时间：2025-07-21 16:20          浏览：40次         点赞：0次          热度：20

a = "103 " b = "13" print(a+b) print(a*3) a ="我在编程侠学习 Scratch, Python, C++" print(a) a1 = a.lower() print(a1) a2 = a.upper() print(a2) a3 = a1.title() print(a3) a4 = a.find(",") print(a4) a4_1 = a.rfind(",") print(a4_1) a5 = a.index(",") print(a5) a5_1 = a.rindex(",") print(a5) a6 = a.split() print(a6) a6_1 = a.split(" ") print(a6_1) a6_2 = a.split(" ",2) print(a6_2) s7 = a.replace(" ","*") print(s7) s7_1 = a.replace(" ","*",2) print(s7_1) s8 = a.count("t") print(s8) s9 = "@".join(a) print(s9) a = " 123212 " s10 = a.lstrip("2 1") print(s10) print(s7_1)