def decapitalize_first_letter(s, upper_rest=False): # Join the first letter in lowercase with the rest of the string, optionally capitalizing the rest return ''.join([s[:1].lower(), (s[1:].upper() if upper_rest else s[1:])]) # Test the function with different input strings and...
defget_first_letter(string):# 使用字符串索引first_letter_1=string[0]# 使用字符串切片first_letter_2=string[0:1]returnfirst_letter_1,first_letter_2 word="Python"first_letter_1,first_letter_2=get_first_letter(word)print(f"使用字符串索引:{first_letter_1}")print(f"使用字符串切片:{first_l...
first_letter=string.split()[0] 1. 在上面的代码中,string.split()会将字符串拆分成一个字符列表,我们通过索引[0]获取列表的第一个元素,即首字母,并将其赋值给变量first_letter。 2.3 输出首字母 最后,我们需要将提取到的首字母输出给用户。可以使用Python的print()函数来实现。以下是相应的代码: print("字...
In addition, we canaccess just a specific characteror aslice of charactersof a string. We might want to do this, for example, if we have a text that’s too long to display and we want to show just a portion of it. Or if we want to make an acronym by taking the first letter of...
String Method : str.capitalize() Return a copy of the string with its first character capitalized and the rest lowercased. 对于一个字符串, 第一个字符为大写, 其余为小写。 str.center(width[, fillchar]) Return centered in a string of length width. ...
Or if I wanted to access say the first or the last element of that string,I can use my common generic sequence operations. 我也会做切片。 I can also do slicing. 所以我可能想从字符串的最开始开始,取前三个对象。 So I might want to start from the very beginning of the string and take...
This example demonstrates how to use the any and isalpha functions to check if a character string contains a letter from the alphabet. Let’s check our first character string my_string1: print(any(c.isalpha()forcinmy_string1))# Check if letters are contained in string# True ...
str1 = "The first letter of '{word}' is '{word[0]}'.".format(word="hello") print(str1) 执行以上代码,输出结果为: The first letter of 'hello' is 'h'. (7)数字的处理 ① 保留小数位数 str1 = "π is {:.2f}.".format(3.1415926) #保留两位小数 print(str1) 执行以上代码,输出结果...
1. Python数据类型(6个) 1.1 数值型(number) 1.2 字符型(string) 字符串常用方法 转义字符 可迭代性 f-string 1.3 列表(list) 1.4 字典(dictionary) 1.5 集合(set) 1.6 元组(tuple) 1.7 内存视图Memoryview 2. 动态引用、强类型 3. 二元运算符和比较运算 4. 标量类型 5. 三元表达式 ...
python基础的随笔更多是偏向于我个人代码实现和讨论,所以对于知识点不会有一个比较输入的说明,知识点可能会在之后系列再做总结。如果后面总结知识点我大概率会手打,截图属实起不到加强记忆的效果,如果可以我会尽量做一个知识点目录(同参考课程进度) 概述