On 8/24/2017 3:24 PM, Stefan Ram wrote:
This is a transcript:
from math import floor
floor( "2.3" )
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: must be real number, not str
help(floor)
Help on built-in function floor in module math:
floor(...)
floor(x)
Return the floor of x as an Integral.
This is the largest integer <= x.
Is the output of »help(floor)« supposed to be a kind of
normative documentation, i.e., /the/ authoritative
documentation of »floor«?
Is there any hint in the documentation about the type
expected of arguments in a call?
Is a parameter name »x« (as used above) described
somewhere to express the requirement of a real number?
It seems, »real« means »int or float«. Is this meaning
of »real« documented somewhere?
in the Python Language Reference
3.2. The standard type hierarchy
numbers.Real (float)
These represent machine-level double precision floating point
numbers.
This is not the meaning of "real" in mathematics!
I was surprised by the use of "integral". A dictionary search does not
(IMHO) support this usage!
Thanks in advance!
--
Image and video hosting by TinyPic
--
https://mail.python.org/mailman/listinfo/python-list
