age =input()ifage.isdecimal():breakprint('Please enter a number for your age.')whileTrue:print('Select a new password (letters and numbers only):') password =input()ifpassword.isalnum():breakprint('Passwords can only have letters and numbers.') 在第一个while循环中,我们询问用户的年龄,并...
Python 自动化指南(繁琐工作自动化)第二版:六、字符串操作 https://automatetheboringstuff.com/2e/chapter6/+操作符将两个字符串值连接在一起,但是您可以做得更多。您可以从字符串值中提取部分字符串,添加或删除空格,将字母转换为小写或大写,并检查字符串的格式是否正确。您甚至可以编写Python代码来访问剪贴板,以...
如果alert_system == 'console',则执行#1部分,其他情况下,如果alert_system == 'email',则进入另一个if子句,我们称之为内部。在内部if子句中,根据error_severity,我们向管理员、一级支持或二级支持发送电子邮件(块#2、#3和#4)。在本例中,send_email函数未定义,因此尝试运行它会导致错误。在书的源代码中,您...
我们需要每个单词都是它自己的字符串,所以我们调用message.split()来获得作为单独字符串的单词列表。字符串'My name is AL SWEIGART and I am 4,000 years old.'将导致split()返回['My', 'name', 'is', 'AL', 'SWEIGART', 'and', 'I', 'am', '4,000', 'years', 'old.']。 我们需要删除每个...
print(joined_string) # 输出Hello, World # split() 实例 sentence = "Hello, World!" split_words = sentence.split(', ') print(split_words) #输出['Hello', 'World!'] 11、字符串对齐操作 字符串rjust()、ljust()和center()对齐文本,通常通过插入空格来实现文本的对齐,也可以在方法中指定插入的字...
``` # Python script to generate random text import random import string def generate_random_text(length): letters = string.ascii_letters + string.digits + string.punctuation random_text = ''.join(random.choice(letters) for i in range(length)) return random_text ``` 说明: 此Python脚本生成...
target_string ="My name is maximums and my luck numbers are 12 45 78"# split on white-spaceword_list = re.split(r"\s+", target_string) print(word_list)# Output ['My', 'name', 'is', 'maximums', 'and', 'my', 'luck', 'numbers', 'are', '12', '45', '78'] ...
Use for loop to convert each character into the list and returns the list/array of the characters. Python program to split string into array of characters using for loop # Split string using for loop# function to split stringdefsplit_str(s):return[chforchins]# main codestring="Hello world...
You can also use .partition() or .rpartition() if you need to divide the string in exactly two parts:Python >>> sentence = "Flat is better than nested" >>> words = sentence.split() >>> words ['Flat', 'is', 'better', 'than', 'nested'] >>> numbers = "1-2-3-4-5" >...
A string in Python is a sequence of characters. It is a derived data type. Strings are immutable. This means that once defined, they cannot be changed. Many Python methods, such asreplace,join, orsplitmodify strings. However, they do not modify the original string. They create a copy of...