Return True if all elements of the
iterable
are true (or if the iterable is empty).
Equivalent to:
3
any(
iterable
)
Return True if any element of the
iterable
is true. If the iterable is empty, return
False. Equivalent to:
4
basestring()
This abstract type is the superclass for str and unicode. It cannot be called or
instantiated, but it can be used to test whether an object is an instance of str or
unicode. isinstance(obj, basestring) is equivalent to isinstance(obj, (str, unicode)).
是字符串和字符编码的超类，是抽象类型。不能被调用或者实例化。可以用来判断实例是否
为字符串或者字符编码。
5、二进制转换
bin(
x
)
Convert an integer number to a binary string. The result is a valid Python
expression. If
x
is not a Python int object, it has to define an __index__() method
that returns an integer.
转换成二进制表达
