str5 = 'python' print(str3.replace('world', str5)) print(str3.replace('l', 't')) # 将l替换为t,不限制替换次数 print(str3.replace('l', 't', 2)) # 将l替换为t,限制最多替换2次 1. 2. 3. 4. 5. 6. 输出为: hello, python! hetto, wortd! hetto, world! 同样,我们也可以...
1. replace(old,new,count)-从字符串中old替换成new,count为替换次数,不写默认全部替换 a='iamymlamleanring' a.replace('am','*') #全部替换 a.replace('am','*',1) #指定替换次数 import string string.replace(a,'am','*') #string中的replace方法 2. expandtabs([tabsize])-将字符串中每个ta...
The example replaces the first occurrence of the word 'fox'. $ ./replace_first.py There is a wolf in the forest. The fox has red fur. Python replace last occurrence of string In the next example, we replace the last occurrence of word 'fox'. replace_last.py #!/usr/bin/python msg...
Example Replace the two first occurrence of the word "one": txt ="one one was a race horse, two two was one too." x =txt.replace("one","three",2) print(x) Try it Yourself » ❮ String Methods Track your progress - it's free!
str.find(str, beg=0end=len(string)) str -- 此选项指定要搜索的字符串。 beg -- 这是开始索引,默认情况下为 0。 end -- 这是结束索引,默认情况下它等于字符串的长度 例如: str1 ="this is oo is string example" str2 ="exam" print(str1.find(str2)) ...
以下实例展示了replace()函数的使用方法:实例 #!/usr/bin/python str = "this is string example...wow!!! this is really string"; print str.replace("is", "was"); print str.replace("is", "was", 3);以上实例输出结果如下:thwas was string example...wow!!! thwas was really string thwa...
string=" Hello\tworld!\nThis is an example. "# 使用 .strip() 方法移除开头和结尾的空白字符,并使用 .replace() 方法将制表符\t和换行符\n替换为空格cleaned_string=string.strip().replace("\t"," ").replace("\n"," ")print(cleaned_string)#输出:"Hello world! This is an example." ...
1. replace法 利用replace函数，对于字符串中的三个字符进行多次替换，不需要导入其它的包，可以一次替换...
/usr/bin/pythonstr="this is string example...wow!!!"print(str.startswith('this'))# 字符串是否以this开头print(str.startswith('string',8))# 从第九个字符开始的字符串是否以 string 开头print(str.startswith('this',2,4))# 从第2个字符开始到第四个字符结束的字符串是否以this开头 ...
>>> s = 'String methods in python'>>> s.islower()False>>> s.isupper()False>>> s = 'string methods in python'>>> s.islower()True>>> s = 'STRING METHODS IN PYTHON'>>> s.isupper()True17.18.19. isalpha()、isnumeric()、isalnum()isalpha()：如果字符串中的所有字符只由字母或文字...