string.ascii_letters来获取所有的字母字符string.digits来获取所有的数字字符string.punctuation来获取所有的标点符号string.capwords()将字符串转化为首字母大写的形式string.rstrip()和string.lstrip()可以去除字符串右边和左边的空白字符二、字符串模板 string模块中的`string.Template`类提供了一种字符串模板的方式，可以...
uppercase_letters = string.ascii_uppercase print(uppercase_letters) # 输出:’ABCDEFGHIJKLMNOPQRSTUVWXYZ’ “` 3. 小写字母库 字符串模块也提供了一个名为`string.ascii_lowercase`的常量,它包含了所有的小写字母。可以使用以下代码来访问小写字母库: “`python import string lowercase_letters = string.ascii...
11) string.uppercase A string containing all the characters that are considered uppercase letters. On most systems this is the string 'ABCDEFGHIJKLMNOPQRSTUVWX YZ'. Do not change its definition — the effect on the routines lower() and swapcase() is undefined. The specific value is locale-dep...
例如,str.isalpha()可以检查字符串中所有字符是否都是字母,str.lower()和str.upper()可以改变字母的大小写。 2.1 示例代码 # 示例字符串test_string="Python3"# 判断是否全为字母is_all_alpha=test_string.isalpha()# False# 将字符串转换为小写和大写lower_case=test_string.lower()# 'python3'upper_case=...
One way to verify the lower case letters in a string is using the islower() method of string library. This method returns True if every character in the current string is lower and returns False otherwise. Example 1 In the example given below, we are taking 2 strings str1 and str2, an...
importstringprint(string.ascii_letters)#"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"print(string.ascii_lowercase)#"abcdefghijklmnopqrstuvwxyz"print(string.ascii_uppercase)#"ABCDEFGHIJKLMNOPQRSTUVWXYZ"print(string.digits)#"0123456789"print(string.hexdigits)#"0123456789abcdefABCDEF"print(string.octdi...
在上述代码中,我们定义了一个函数count_letters,它接受一个字符串作为参数,并返回字符串中字母的数量。我们使用isalpha()方法来检查一个字符是否是一个字母。 字母大小写转换 在Python中,我们可以使用upper()和lower()方法将字母从小写转换为大写,或从大写转换为小写。
Write a program that accepts a sentence and calculate the number of upper case letters and lower case letters. Suppose the following input is supplied to the program: Hello world! Then, the output should be: UPPER CASE 1 LOWER CASE 9 Hints: In case of input data being supplied to the ...
Python Regex to Find Sequences of One Upper Case Letter Followed by Lower Case LettersPythonServer Side ProgrammingProgramming When it is required to find sequences of an upper case letter followed by lower case using regular expression, a method named ‘match_string’ is defined that ...
The Python lower() function converts a string to all lowercase. The Python isLower() method will check if the alphabetical characters in a string are all lowercase and return True or False. The lower() and isLower() functions are useful for fields like email where all letters should be ...