Python standard library: built-in functions abs (x), pythonabs

Python standard library: built-in functions abs (x), pythonabs

Returns the absolute value of a number. The parameter can be an integer or floating point number. If the parameter is a plural value, the modulo of the plural value is returned. Therefore, the note of abs () function is that the complex numbers are calculated differently.

Example:

# Positive integer print ('abs (1): ', abs (1) # negative integer print ('abs (-1):', abs (-1 )) # print ('abs (-10.5): ', abs (-10.5) # print ('abs (3 + 4j ):', abs (3 + 4j ))

The output result is as follows:

Abs (1): 1

Abs (-1): 1

Abs (-1, 10.5): 10.5

Abs (3 + 4j): 5.0

In this example, 1,-1 is an integer,-10.5 is a floating point, and 3 + 4j is a plural number.

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How to view built-in functions in python

Import sys
Print dir (sys. modules ['_ builtin _'])

Who will give an example of several python built-in functions?

All built-in functions of python

Abs () divmod () input () open () staticmethod ()
All () enumerate () int () ord () str ()
Any () eval () isinstance () pow () sum ()
Basestring () execfile () issubclass () print () super ()
Bin () file () iter () property () tuple ()
Bool () filter () len () range () type ()
Bytearray () float () list () raw_input () unichr ()
Callable () format () locals () reduce () unicode ()
Chr () frozenset () long () reload () vars ()
Classmethod () getattr () map () repr () xrange ()
Cmp () globals () max () reversed () zip ()
Compile () hasattr () memoryview () round () _ import __()
Complex () hash () min () set () apply ()
Delattr () help () next () setattr () buffer ()
Dict () hex () object () slice () coerce ()
Dir () id () oct () sorted () intern ()

I have read it all over again. What kind of usage do you want to know?