python __builtins__ str类 (65)
65、'str', 字节转换成字符串。第一个传入参数是要转换的字节,第二个参数是按什么编码转换成字符串
class str(object)
| str(object='') -> str
| str(bytes_or_buffer[, encoding[, errors]]) -> str
|
| Create a new string object from the given object. If encoding or
| errors is specified, then the object must expose a data buffer
| that will be decoded using the given encoding and error handler.
| Otherwise, returns the result of object.__str__() (if defined)
| or repr(object).
| encoding defaults to sys.getdefaultencoding().
| errors defaults to 'strict'.
|
| Methods defined here:
|
| __add__(self, value, /)
| Return self+value.
|
| __contains__(self, key, /)
| Return key in self.
|
| __eq__(self, value, /)
| Return self==value.
|
| __format__(...)
| S.__format__(format_spec) -> str
|
| Return a formatted version of S as described by format_spec.
|
| __ge__(self, value, /)
| Return self>=value.
|
| __getattribute__(self, name, /)
| Return getattr(self, name).
|
| __getitem__(self, key, /)
| Return self[key].
|
| __getnewargs__(...)
|
| __gt__(self, value, /)
| Return self>value.
|
| __hash__(self, /)
| Return hash(self).
|
| __iter__(self, /)
| Implement iter(self).
|
| __le__(self, value, /)
| Return self<=value.
|
| __len__(self, /)
| Return len(self).
|
| __lt__(self, value, /)
| Return self<value.
|
| __mod__(self, value, /)
| Return self%value.
|
| __mul__(self, value, /)
| Return self*value.n
|
| __ne__(self, value, /)
| Return self!=value.
|
| __new__(*args, **kwargs) from builtins.type
| Create and return a new object. See help(type) for accurate signature.
|
| __repr__(self, /)
| Return repr(self).
|
| __rmod__(self, value, /)
| Return value%self.
|
| __rmul__(self, value, /)
| Return self*value.
|
| __sizeof__(...)
| S.__sizeof__() -> size of S in memory, in bytes
|
| __str__(self, /)
| Return str(self).
|
| capitalize(...)
| S.capitalize() -> str
|
| Return a capitalized version of S, i.e. make the first character
| have upper case and the rest lower case.
|
| casefold(...)
| S.casefold() -> str
|
| Return a version of S suitable for caseless comparisons.
|
| center(...)
| S.center(width[, fillchar]) -> str
|
| Return S centered in a string of length width. Padding is
| done using the specified fill character (default is a space)
|
| count(...)
| S.count(sub[, start[, end]]) -> int
|
| Return the number of non-overlapping occurrences of substring sub in
| string S[start:end]. Optional arguments start and end are
| interpreted as in slice notation.
|
| encode(...)
| S.encode(encoding='utf-8', errors='strict') -> bytes
|
| Encode S using the codec registered for encoding. Default encoding
| is 'utf-8'. errors may be given to set a different error
| handling scheme. Default is 'strict' meaning that encoding errors raise
| a UnicodeEncodeError. Other possible values are 'ignore', 'replace' and
| 'xmlcharrefreplace' as well as any other name registered with
| codecs.register_error that can handle UnicodeEncodeErrors.
|
| endswith(...)
| S.endswith(suffix[, start[, end]]) -> bool
|
| Return True if S ends with the specified suffix, False otherwise.
| With optional start, test S beginning at that position.
| With optional end, stop comparing S at that position.
| suffix can also be a tuple of strings to try.
|
| expandtabs(...)
| S.expandtabs(tabsize=8) -> str
|
| Return a copy of S where all tab characters are expanded using spaces.
| If tabsize is not given, a tab size of 8 characters is assumed.
|
| find(...)
| S.find(sub[, start[, end]]) -> int
|
| Return the lowest index in S where substring sub is found,
| such that sub is contained within S[start:end]. Optional
| arguments start and end are interpreted as in slice notation.
|
| Return -1 on failure.
|
| format(...)
| S.format(*args, **kwargs) -> str
|
| Return a formatted version of S, using substitutions from args and kwargs.
| The substitutions are identified by braces ('{' and '}').
|
| format_map(...)
| S.format_map(mapping) -> str
|
| Return a formatted version of S, using substitutions from mapping.
| The substitutions are identified by braces ('{' and '}').
|
| index(...)
| S.index(sub[, start[, end]]) -> int
|
| Return the lowest index in S where substring sub is found,
| such that sub is contained within S[start:end]. Optional
| arguments start and end are interpreted as in slice notation.
|
| Raises ValueError when the substring is not found.
|
| isalnum(...)
| S.isalnum() -> bool
|
| Return True if all characters in S are alphanumeric
| and there is at least one character in S, False otherwise.
|
| isalpha(...)
| S.isalpha() -> bool
|
| Return True if all characters in S are alphabetic
| and there is at least one character in S, False otherwise.
|
| isdecimal(...)
| S.isdecimal() -> bool
|
| Return True if there are only decimal characters in S,
| False otherwise.
|
| isdigit(...)
| S.isdigit() -> bool
|
| Return True if all characters in S are digits
| and there is at least one character in S, False otherwise.
|
| isidentifier(...)
| S.isidentifier() -> bool
|
| Return True if S is a valid identifier according
| to the language definition.
|
| Use keyword.iskeyword() to test for reserved identifiers
| such as "def" and "class".
|
| islower(...)
| S.islower() -> bool
|
| Return True if all cased characters in S are lowercase and there is
| at least one cased character in S, False otherwise.
|
| isnumeric(...)
| S.isnumeric() -> bool
|
| Return True if there are only numeric characters in S,
| False otherwise.
|
| isprintable(...)
| S.isprintable() -> bool
|
| Return True if all characters in S are considered
| printable in repr() or S is empty, False otherwise.
|
| isspace(...)
| S.isspace() -> bool
|
| Return True if all characters in S are whitespace
| and there is at least one character in S, False otherwise.
|
| istitle(...)
| S.istitle() -> bool
|
| Return True if S is a titlecased string and there is at least one
| character in S, i.e. upper- and titlecase characters may only
| follow uncased characters and lowercase characters only cased ones.
| Return False otherwise.
|
| isupper(...)
| S.isupper() -> bool
|
| Return True if all cased characters in S are uppercase and there is
| at least one cased character in S, False otherwise.
|
| join(...)
| S.join(iterable) -> str
|
| 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
| done using the specified fill character (default is a space).
|
| lower(...)
| S.lower() -> str
|
| Return a copy of the string S converted to lowercase.
|
| lstrip(...)
| S.lstrip([chars]) -> str
|
| Return a copy of the string S with leading whitespace removed.
| If chars is given and not None, remove characters in chars instead.
|
| partition(...)
| S.partition(sep) -> (head, sep, tail)
|
| Search for the separator sep in S, and return the part before it,
| the separator itself, and the part after it. If the separator is not
| found, return S and two empty strings.
|
| replace(...)
| S.replace(old, new[, count]) -> str
|
| Return a copy of S with all occurrences of substring
| old replaced by new. If the optional argument count is
| given, only the first count occurrences are replaced.
|
| rfind(...)
| S.rfind(sub[, start[, end]]) -> int
|
| Return the highest index in S where substring sub is found,
| such that sub is contained within S[start:end]. Optional
| arguments start and end are interpreted as in slice notation.
|
| Return -1 on failure.
|
| rindex(...)
| S.rindex(sub[, start[, end]]) -> int
|
| Return the highest index in S where substring sub is found,
| such that sub is contained within S[start:end]. Optional
| arguments start and end are interpreted as in slice notation.
|
| Raises ValueError when the substring is not found.
|
| rjust(...)
| S.rjust(width[, fillchar]) -> str
|
| Return S right-justified in a string of length width. Padding is
| done using the specified fill character (default is a space).
|
| rpartition(...)
| S.rpartition(sep) -> (head, sep, tail)
|
| Search for the separator sep in S, starting at the end of S, and return
| the part before it, the separator itself, and the part after it. If the
| separator is not found, return two empty strings and S.
|
| rsplit(...)
| S.rsplit(sep=None, maxsplit=-1) -> list of strings
|
| Return a list of the words in S, using sep as the
| delimiter string, starting at the end of the string and
| working to the front. If maxsplit is given, at most maxsplit
| splits are done. If sep is not specified, any whitespace string
| is a separator.
|
| rstrip(...)
| S.rstrip([chars]) -> str
|
| Return a copy of the string S with trailing whitespace removed.
| If chars is given and not None, remove characters in chars instead.
|
| split(...)
| S.split(sep=None, maxsplit=-1) -> list of strings
|
| Return a list of the words in S, using sep as the
| delimiter string. If maxsplit is given, at most maxsplit
| splits are done. If sep is not specified or is None, any
| whitespace string is a separator and empty strings are
| removed from the result.
|
| splitlines(...)
| S.splitlines([keepends]) -> list of strings
|
| Return a list of the lines in S, breaking at line boundaries.
| Line breaks are not included in the resulting list unless keepends
| is given and true.
|
| startswith(...)
| S.startswith(prefix[, start[, end]]) -> bool
|
| Return True if S starts with the specified prefix, False otherwise.
| With optional start, test S beginning at that position.
| With optional end, stop comparing S at that position.
| prefix can also be a tuple of strings to try.
|
| strip(...)
| S.strip([chars]) -> str
|
| Return a copy of the string S with leading and trailing
| whitespace removed.
| If chars is given and not None, remove characters in chars instead.
|
| swapcase(...)
| S.swapcase() -> str
|
| Return a copy of S with uppercase characters converted to lowercase
| and vice versa.
|
| title(...)
| S.title() -> str
|
| Return a titlecased version of S, i.e. words start with title case
| characters, all remaining cased characters have lower case.
|
| translate(...)
| S.translate(table) -> str
|
| Return a copy of the string S in which each character has been mapped
| through the given translation table. The table must implement
| lookup/indexing via __getitem__, for instance a dictionary or list,
| mapping Unicode ordinals to Unicode ordinals, strings, or None. If
| this operation raises LookupError, the character is left untouched.
| Characters mapped to None are deleted.
|
| upper(...)
| S.upper() -> str
|
| Return a copy of S converted to uppercase.
|
| zfill(...)
| S.zfill(width) -> str
|
| Pad a numeric string S with zeros on the left, to fill a field
| of the specified width. The string S is never truncated.
|
| ----------------------------------------------------------------------
| Static methods defined here:
|
| maketrans(x, y=None, z=None, /)
| Return a translation table usable for str.translate().
|
| If there is only one argument, it must be a dictionary mapping Unicode
| ordinals (integers) or characters to Unicode ordinals, strings or None.
| Character keys will be then converted to ordinals.
| If there are two arguments, they must be strings of equal length, and
| in the resulting dictionary, each character in x will be mapped to the
| character at the same position in y. If there is a third argument, it
| must be a string, whose characters will be mapped to None in the result.
python __builtins__ str类 (65)的更多相关文章
- python __builtins__ float类 (25)
25.'float', 用于将整数和字符串转换成浮点数. class float(object) | float(x) -> floating point number | | Convert ...
- python __builtins__ bool类 (6)
6.'bool', 函数用于将给定参数转换为布尔类型,如果没有参数,返回 False. class bool(int) # 继承于int类型 | bool(x) -> bool # 创建boo ...
- python __builtins__ staticmethod类 (64)
64.'staticmethod', 返回静态方法 class staticmethod(object) | staticmethod(function) -> method | | Conve ...
- python __builtins__ memoryview类 (46)
46.'memoryview', 返回给定参数的内存查看对象(Momory view).所谓内存查看对象,是指对支持缓冲区协议的数据进行包装,在不需要复制对象基础上允许Python代码访问. cla ...
- python __builtins__ int类 (36)
36.'int', 用于将一个字符串或数字转换为整型 class int(object) | int(x=0) -> integer | int(x, base=10) -> intege ...
- python __builtins__ help类 (32)
32.'help', 接收对象作为参数,更详细地返回该对象的所有属性和方法 class _Helper(builtins.object) | Define the builtin 'help'. | ...
- python __builtins__ complex类 (13)
13.'complex', 函数用于创建一个值为 real + imag * j 的复数或者转化一个字符串或数为复数.如果第一个参数为字符串,则不需要指定第二个参数. class complex(ob ...
- python __builtins__ classmethod类 (11)
11.'classmethod', 修饰符对应的函数不需要实例化,不需要 self 参数,但第一个参数需要是表示自身类的 cls 参数,可以来调用类的属性,类的方法,实例化对象等. class cla ...
- python __builtins__ bytes类 (8)
8.'bytes', 字符串转换成字节流.第一个传入参数是要转换的字符串,第二个参数按什么编码转换为字节. class bytes(object) | bytes(iterable_of_ints) ...
随机推荐
- 消息列队 分布式事务解办法 celery flower使用总结
前言 项目中有场景 需要用到 分布式事务业务,经过查下资料把学习相关笔记做记录方便他人或者自己后面查看. 场景 在网站A业务中有个操作 是 要在网站B中新建一台服务器跑业务.A中执行B中的接口创建服务 ...
- Photoshop 更改图片颜色
程序猿兼职美术的常常没有时间搞太多图片.我们能够一张图片更改主要颜色来到达目的.我知道的主要有2种方法,1是更改色相,2是替换颜色.直接用油漆桶仅仅能在异常简单的图片才干用. 1. 更改色相 ...
- Android OpenGL ES(六)----进入三维在代码中创建投影矩阵和旋转矩阵
我们如今准备好在代码中加入透视投影了. Android的Matrix类为它准备了两个方法------frustumM()和perspectiveM(). 不幸的是.frustumM()的个缺陷,它会影 ...
- iOS 相似淘宝商品详情查看翻页效果的实现
基本思路: 1.设置一个 UIScrollView 作为视图底层,而且设置分页为两页 2.然后在第一个分页上加入一个 UITableView 而且设置表格可以上提载入(上拉操作即为让视图滚动到下一页) ...
- postgres源码目录结构
1.第一级目录介绍 |_postgres |_aclocal.m4------------config用的文件的一部分 |_config----------------config文件目录 |_con ...
- ribbon负载均衡进行服务消费
相同服务以不同端口形式注册到eureka上,ribbon从eureka上获取冰进行服务消费,会偶现如下现象: I/O error on GET request for "http://COM ...
- Devices下设备的进程显示为问号的问题
adb shell getprop ro.debuggable 返回 ro.debuggable=0 说明这个机子的版本不是userdebug版本,是user版本 只有这 ...
- 线程安全 对StringBuilder抛出ArrayIndexOutOfBoundsException的探究
对StringBuilder抛出ArrayIndexOutOfBoundsException的探究 - CSDN博客 https://blog.csdn.net/liu_005/article/det ...
- #import @import #include
1.在xcode5以后 ,Replace #import <Cocoa/Cocoa.h> with @import Cocoa; 在这之前 必须手动设置一下才能用. 2.#import 与 ...
- RTC脚本模型课堂 - ShowMessage(Star5的博客)
ShowMessage对delphi开发人员而言,是个非常熟悉的玩意,常常需要在软件上做一些合适的提醒,以达到更好的用户体验.今天我们来介绍一下网站里的提示框,也就是JavaSciprt中的alert ...