b'hello'104b'll'b'\xe6\x88\x91\xe7\x88\xb1Python\xe7\xbc\x96\xe7\xa8\x8b'b'\xe5\xad\xa6\xe4\xb9\xa0Python\xe5\xbe\x88\xe6\x9c\x89\xe8\xb6\xa3' bool布尔类型 Python提供了bool类型来表示真(对)或假(错)。 比如常见的5 > 3比较算式,这个是正确
有两个额外的特殊方法支持对象的替代表示:__bytes__和__format__。__bytes__方法类似于__str__:它被bytes()调用以获取对象表示为字节序列。关于__format__,它被 f-strings、内置函数format()和str.format()方法使用。它们调用obj.__format__(format_spec)以获取使用特殊格式代码的对象的字符串显示。我们将...
Using the str() function to convert bool to string in Python.The in-built str() function simply converts any specified value taken as its argument and returns a string. The value taken in could be any variable, but it can even be any direct value, for example, the number 9, if ...
x,y):self.x=float(x)# ②self.y=float(y)def__iter__(self):return(iforiin(self.x,self.y))# ③def__repr__(self):class_name=type(self).__name__return'{}({!r}, {!r})'.format(class_name,*self)# ④def__str__(self):returnstr(tuple(self))# ⑤def__bytes__(self):return...
DataFrame.any([axis, bool_only, skipna]) #Return whether any element is True over requested axis DataFrame.clip([lower, upper, axis]) #Trim values at input threshold(s). DataFrame.clip_lower(threshold[, axis]) #Return copy of the input with values below given value(s) truncated. ...
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 floating point numbers, this truncates towards zero. If x is not a number or if base is given, then x must be a string, ...
As soon as you insert any one of them, attempting to look up any distinct but equivalent key will succeed with the original mapped value (rather than failing with a KeyError): >>> 5 == 5.0 == 5 + 0j True >>> 5 is not 5.0 is not 5 + 0j True >>> some_dict = {} >>> ...
(safer, easier to debug) the immutability guarantee start at the first level. but we can reach in and modify the mutable object inside Chapter3: Numbers Booleans The bool() function takes any value as its argument and returns the boolean equivalent. Nonzero numbers are considered True. Zero...
array(data: 'Sequence[object] | AnyArrayLike', dtype: 'Dtype | None' = None, copy: 'bool' = True) -> 'ExtensionArray' Help on function array in module pandas.core.construction: array(data: 'Sequence[object] | AnyArrayLike', dtype: 'Dtype | None' = None, copy: 'bool' = True)...
方法描述DataFrame.abs()返回绝对值DataFrame.all([axis, bool_only, skipna, level])Return whether all elements are True over requested axisDataFrame.any([axis, bool_only, skipna, level])Return whether any element is True over requested axisDataFrame.clip([lower, upper, axis])Trim values at inp...