There are two more versions of this method,lstripandrstrip, which eliminate white space characters to the left or to the right of the string respectively, instead of both sides. Other methods give you information about the string itself. The methodcountreturns how many times a given substring a...
AI代码解释 print('How are you?')feeling=input()iffeeling.lower()=='great':print('I feel great too.')else:print('I hope the rest of your day is good.') 当你运行这个程序时,问题被显示出来,在great上输入一个变量,比如GREat,仍然会给出输出I feel great too。向程序中添加代码来处理用户输入...
string.ascii_lowercase string.ascii_uppercase string.digits string.hexdigits string.octdigits string.punctuation string.printable string.whitespace 2. 自定义字符串格式 2.1 class string.Formatter 3. 格式字符串语法 field_name conversion format_spec 3.1 格式规范Mini-Language 3.1.1 定义 3.1.2 各选项的含...
```python # 二叉树的前序遍历 class TreeNode: def __init__(self, val=0, left=None, r...
Return S left-justified in a Unicode string of length width. Padding is done using the specified fill character (default is a space)."""return""#内容右对齐,右边用fillchar填充defrjust(self, width, fillchar=None):#real signature unknown; restored from __doc__"""S.rjust(width[, fillchar...
string str2="hello"; string s2="weakhaha"; s.insert(0,s2,1,3);//将字符串s2从下标为1的e开始数3个字符,分别是eak,插入s串的下标为0的字符h前 1. 2. 3. 输出eakhello 应用团体程序设计天梯赛-练习集——L1-032 Left-pad (20分) string(n,‘0’)输出n个0字符 ...
用string.format：>>> msg = 'hello world'>>> 'msg: {}'.format(msg)'msg: hello world'有了f-string后，可以简化成如下：>>> msg = 'hello world'>>> f'msg: {msg}''msg: hello world’可以看到，用fstring明显就清晰简化了很多，并且也更加具有可读性。fstring的一般用法如下：可以f或者F开头，...
1) # Rounding off Integers String1 = "{0:.2f}".format(1 / 6) print("none-sixth is : ") print(String1) # String alignment String1 = "|{:<10}|{:^10}|{:>10}|".format('Hello', 'to', 'Tyra') print("nLeft, centre and right alignment with Formatting: ") print(String1)...
rstrip() 删除 string 字符串末尾的指定字符(默认为空格). 语法 rstrip()方法语法: str.rstrip([chars]) 参数 chars -- 指定删除的字符(默认为空格) 返回值 返回删除 string 字符串末尾的指定字符后生成的新字符串。 实例 以下实例展示了rstrip()函数的使用方法: ...
| Return a string which is the concatenation of the strings in the | iterable. The separator between elements is S. | | ljust(...) | S.ljust(width[, fillchar]) -> str | | Return S left-justified in a Unicode string of length width. Padding is ...