In order to avoid thisTraceback Error, we can use the keywordinto check if a substring is contained in a string. In the case of Loops, it was used for iteration, whereas in this case it’s a conditional that can be eithertrueorfalse.It’ll be true if the substring is part of the ...
# 获取s中从开始到倒数第6个字符的子串 print(s[: -6]) #输出crazyit.org is ver 此外,Python 字符串还支持用 in 运算符判断是否包含某个子串。例如如下代码:# 判断s是否包含'very'子串 print('very' in s) # True print('fkit' in s) # False 还可使用全局内置的 min() 和 max() 函数获取字符...
Note that find() function returns the index position of the substring if it’s found, otherwise it returns -1. Count of Substring Occurrence We can usecount() functionto find the number of occurrences of a substring in the string. s = 'My Name is Pankaj' print('Substring count =', s...
combined_string = string1 + ' ' + string2 # 结果为 'Hello World' (2)重复(Repetition) 使用*运算符可以重复一个字符串指定的次数。 repeated_string = 'a' * 5 # 结果为 'aaaaa' (3) in的用法 使用in关键字可以检查一个字符串是否包含另一个子字符串。 substring = 'Python' substring in string...
部分substring ="Python"[1:4]print("截取字符串中的一部分示例:", substring)#输出:yth#🌾:使用 in 运算符check_in ="H"in"Hello"print("使用 in 运算符示例:", check_in)#输出:True#🌾:使用 not in 运算符check_not_in ="H"notin"Hello"print("使用 not in 运算符示例:", check_not_in)...
“He” in str “she” not in str string模块,还提供了很多方法,如 S.find(substring, [start [,end]]) #可指范围查找子串,返回索引值,否则返回-1 S.rfind(substring,[start [,end]]) #反向查找 S.index(substring,[start [,end]]) #同find,只是找不到产生ValueError异常 ...
string = "Hello, World!" # 截取字符串的前五个字符 substring = string[0:5] print(substring) # 输出: Hello # 截取字符串的第六个字符到倒数第二个字符 substring = string[5:-1] print(substring) # 输出: , World # 截取字符串的最后五个字符 substring = string[-5:] print(substring) # 输...
python substring python substring函数 字符串的操作 capitaliza() str.capitaliza() 方法返回一个 首字母大写,其他字母小写的字符串 count() str.count(sub,start=0,end=len(str)) 方法 统计字符串str中子字符串sub出现的次数,可选参数为在字符串中开始搜索和结束的位置...
1517Traceback (most recent call last): File "<string>", line 10, in print(quote.index('fun', 7, 18))ValueError: substring not found注意：Python中的索引从0而不是1开始。因此出现的是19而不是20。示例2：带有start 和end参数的index（）sentence = 'Python programming is fun.'# Substring...
substring2 =string[:-3] print(substring2) # Print"The quick brown " 获取字符串中的一个字符 这个很简单,如果切片中没有:字符,只包含数字,它将返回该索引处的字符。 例子: string='0123456789' substring =string[4] print(substring) # Print "4" ...