Python字符串常用方法
# 1、find:查找字符串,返回的是字符串的索引(下标),找不到返回的是-1 # 注意:如果存在多个,返回的是第一个 # s = "python musen" # res = s.find('h') # print(res) # 2、count:计算字符的个数 # s2 = "abcdddffttttt" # res2 = s2.count('a') # print(res2) # 3、replace:替换字符串的内容 # 默认所有符合要求的都替换,可以通过第三个参数指定替换的次数 # s3 = "python php java c++ java c++ java" # res3 = s3.replace('java', 'python', 1) # print(res3) # 4、split:字符串分割 # s4 = "data:111,url:wwww.baidu,mobile:1311121324" # res4 = s4.split(',') # print(res4) # 5、upper:把小写的字母转换为大写 # method = "post" # print(method.upper()) # 工作可以会用到的场景 # print("POST" == method.upper()) # 6、lower:把大写的字母转换为小写 # str6 = "MUSEN" # print(str6.lower()) # 7、strip:去除字符串首尾的空格 # str7 = " python:666 java:8888 " # print(str7.strip()) # 通过替换来去除 # res8 = str7.replace(" ","") # print(res8) # 8、join:字符串拼接 # a = 'hello' # b = 'python18' # c = '!' # res8 = "-*-".join([a, b, c]) # 和 a +"-*-" + b + "-*-" +c效果是一样的 # print(res8) # 9、format