return a string containing a printable representation of an object,#but escape the non-ASCII characters in the string returned by repr() using \x, \u or \U escapes.#This generates a string similar to that returned by repr() in Python 2.'''a = '中国' ...
Compile the source into a code or AST object. Code objects can be executed by exec() or eval(). source can either be a normal string, a byte string, or an AST object. Refer to the ast module documentation for information on how to work with AST objects. 参数说明: source:字符串或AST...
Python has a set of built-in functions. FunctionDescription abs()Returns the absolute value of a number all()Returns True if all items in an iterable object are true any()Returns True if any item in an iterable object is true ascii()Returns a readable version of an object. Replaces none...
# Help on class int in module builtins: # # class int(object) # | int([x]) -> integer # | int(x, base=10) -> integer # | # | Convert a number or string to an integer, or return 0 if no arguments # | are given. If x is a number, return x.__int__(). For flo...
# 创建bytearray array = bytearray(b"acbcdc") # 遍历 for value in array: print(value) #...
Python type() builtin function is used get the type of specified object. In this tutorial, we will learn about the syntax of Python type() function, and learn how to use this function with the help of examples. Syntax There are two forms for type() function based on the number of par...
The function deletes the named attribute, provided the object allows it. For example, delattr(x, 'foobar') is equivalent to del x.foobar.setattr(object, name, value)This is the counterpart of getattr(). The arguments are an object, a string and an arbitrary value. The string may name ...
Python repr() builtin function is used to get a string with printable representation of given object. For many types, repr() function tries to return a string that would yield the same value when passed toeval()function. In this tutorial, we will learn about the syntax of Python repr()...
简介:Python3 一行代码列出所有built-in内建函数及用法,比“史上最全”还要全! 一行代码: for i,hlp in enumerate([i for i in dir(__builtins__) if i[0]>='a']):print(i+1,hlp);help(hlp) 列出所有built-in函数function或类class的帮助:(所用版本Python3.8.3,共73个函数,已屏蔽掉大写字母和...
python中的builtins配置禁用eval python built-in functions,python学习built-infunction3.4.3__author__='孟强'#1.abs(x)返回数字(可为普通型、长整型或浮点型)的绝对值。如果给出复数,返回值就是该复数的模'''print("abs()")a=[abs(2.0),abs(-2),abs(-3j+4)]print(a)'