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...
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...
string: The variable pointing to the target string (i.e., the string we want to split). maxsplit: The number of splits you wanted to perform. Ifmaxsplitis 2, at most two splits occur, and the remainder of the string is returned as the final element of the list. flags: By default...
print('''Dear Alice,Eve's cat has been arrestedforcatnapping,cat burglary,and extortion.Sincerely,Bob''') 将该程序保存为catnapping.py并运行。输出将如下所示: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Dear Alice,Eve's cat has been arrestedforcatnapping,cat burglary,and extortion.Since...
这可能是最简单的例子:当late被传递给if语句时,late充当条件表达式,在布尔上下文中进行评估(就像我们调用bool(late)一样)。如果评估的结果是True,那么我们就进入if语句后面的代码体。请注意,print指令是缩进的:这意味着它属于由if子句定义的作用域。执行这段代码会产生: ...
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符。 string = "Hello" # rjust() 用 "*" 右对齐 print(string.rjust(10, '*')) ...
In that case, I specify the starting point of the slice and the end point of the slice. 所以在这种情况下,我得到字母“Pyt” So in this case, I get the letters "Pyt." 因此Python向我返回一个新字符串。 So Python returns a new string to me. 我也可以使用负索引进行切片。 I can also ...
Use the `re.split()` method to split a string into text and number. The `re.split()` method will split the string on the digits.
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...
>>> # split the string "1 2 3" and return a list of the numbers. >>> "1 2 3".split() # splitting ['1', '2', '3']Or you can split a string based on a delimiter like :.>>> “1:2:3”.split(“:”) [‘1’, ‘2’, ‘3’]...