lutz_5th_ed/chapter_05/chapter_05.py

#!/usr/local/bin/python
#----------------------------------------------------------------------------------------------------
#$Header: svn://localhost/dtapublic/projs/dtats/trunk/projs/2018/20181111_learning_python/lutz_5th_ed/chapter_04/chapter_04.py 253 2018-11-12 02:11:09Z dashley $
#----------------------------------------------------------------------------------------------------
#David T. Ashley, 11/2018
#----------------------------------------------------------------------------------------------------
#This file contains notes and experiments as I worked through Mark Lutz's book, "Learning
#Python: Powerful Object-Oriented Programming 5th Edition, Kindle Edition", Chapter 5.
#----------------------------------------------------------------------------------------------------
import sys
import math   #Many math functions available in Python libraries.

#Numeric Types
#-------------

#Numeric Literals
#   o Integers as expected.
#   o Octal:   0o177
#   o Hex:     0x9ff
#   o Binary:  0b101010
#   o Complex Number:  3+4j, 3j

#Floating points are implemented as C "double"s.

#Integer promotion to arbitrary length is automatic in Python 3.X.
#Normal and long integers have been merged.

#Built-in calls hex(), oct(), and bin() convert an integer to that
#representation.
print(hex(41213))
print(oct(41213))
print(bin(41213))

#Complex numbers represented internally with a pair of floating point numbers.
c = 1j
c2 = c*c
print(c)
print(c2)

#Complex numbers may also be crated with the complex() built-in call.
c3 = complex(-4.29, 3.22)
print(c3)

#x//y floor division.
print(49.0/5.0)
print(49.0//5.0)

#Comparison operators may be chained:  x < y < z is the same as
#x < y and y < z.


#----------------------------------------------------------------------------------------------------

1	#!/usr/local/bin/python
2	#----------------------------------------------------------------------------------------------------
3	#$Header: svn://localhost/dtapublic/projs/dtats/trunk/projs/2018/20181111_learning_python/lutz_5th_ed/chapter_04/chapter_04.py 253 2018-11-12 02:11:09Z dashley $
4	#----------------------------------------------------------------------------------------------------
5	#David T. Ashley, 11/2018
6	#----------------------------------------------------------------------------------------------------
7	#This file contains notes and experiments as I worked through Mark Lutz's book, "Learning
8	#Python: Powerful Object-Oriented Programming 5th Edition, Kindle Edition", Chapter 5.
9	#----------------------------------------------------------------------------------------------------
10	import sys
11	import math #Many math functions available in Python libraries.
12
13	#Numeric Types
14	#-------------
15
16	#Numeric Literals
17	# o Integers as expected.
18	# o Octal: 0o177
19	# o Hex: 0x9ff
20	# o Binary: 0b101010
21	# o Complex Number: 3+4j, 3j
22
23	#Floating points are implemented as C "double"s.
24
25	#Integer promotion to arbitrary length is automatic in Python 3.X.
26	#Normal and long integers have been merged.
27
28	#Built-in calls hex(), oct(), and bin() convert an integer to that
29	#representation.
30	print(hex(41213))
31	print(oct(41213))
32	print(bin(41213))
33
34	#Complex numbers represented internally with a pair of floating point numbers.
35	c = 1j
36	c2 = c*c
37	print(c)
38	print(c2)
39
40	#Complex numbers may also be crated with the complex() built-in call.
41	c3 = complex(-4.29, 3.22)
42	print(c3)
43
44	#x//y floor division.
45	print(49.0/5.0)
46	print(49.0//5.0)
47
48	#Comparison operators may be chained: x < y < z is the same as
49	#x < y and y < z.
50
51
52
53	#----------------------------------------------------------------------------------------------------
54