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 2.e
uppercase -- a string containing all characters considered uppercase letters letters -- a string containing all characters considered letters digits -- a string containing all characters considered decimal digits hexdigits -- a string containing all characters considered hexadecimal digits octdigits -- ...
54 55 """ 56 return (sep or ' ').join(x.capitalize() for x in s.split(sep)) 57 58 59 # Construct a translation string 60 _idmapL = None 61 def maketrans(fromstr, tostr): 62 """maketrans(frm, to) -> string 63 64 Return a translation table (a string of 256 bytes long) ...
a nice string representation of the object. | If the argument is a string, the return value is the same object. | | Method resolution order: | str | basestring | object | | Methods defined here: | | __add__(...) | x.__add__(y) <==> x+y | | __contains__(...) | x...
lable=Label(root,text="label",bg="pink",bd=10,font=("Arial",12),width=8,height=3)lable.pack(side=LEFT) 最后你需要调用pack()来把控件布置上去,你可以指定布局方式,可定义的属性也非常多 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ...
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,...
在这个函数中,我们首先对输入字符串调用strip()方法去除首尾的空格,然后再调用pad_string函数进行补齐。 4. 字符串处理的序列图 字符串处理的过程可以通过序列图清晰地表达出来。以下是一个简单的序列图,展示了从输入字符串到最终输出的各个处理步骤: "字符串补齐""字符串处理"User"字符串补齐""字符串处理"User输入...
可以直接提供需要转换的列名以默认的日期形式转换,也可以用字典的格式提供列名和转换的日期格式,比如{column_name: format string}(format string:"%Y:%m:%H:%M:%S") columns 要选取的列。一般没啥用,因为在sql命令里面一般就指定要选择的列了 chunksize 如果提供了一个整数值,那么就会返回一generator,每次输出的...
Return S left-justified in a Unicode string of length width. Padding is done using the specified fill character (default is a space). """ return "" def lower(self): """ S.lower() -> str Return a copy of the string S converted to lowercase. ...
["000002", "000001", "000858"] batch_results = detector.scan_multiple_stocks(sample_stocks, "20230601", "20240101") if not batch_results.empty: print("\n📊 批量扫描结果:") print(batch_results.to_string(index=False)) print("\n🎉 光头光脚检测工具演示完成!") if __name__ == "__...