Р.Сузи. Спецкурс "Язык Python и его приложения" Практическое занятие 1

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Р.Сузи. Спецкурс "Язык Python и его приложения" Практическое занятие 1

Практическое занятие 1.

$ python
Python 1.5.2 (#1, Apr  3 2002, 18:16:26)  [GCC 2.96 20000731 
Copyright 1991-1995 Stichting Mathematisch Centrum, Amsterdam
>>> 2+2
4
>>> 2**1000L
10715086071862673209484250490600018105614048117055336074437503883703510511249361224931983788156958581275946729175531468251871452856923140435984577574698574803934567774824230985421074605062371141877954182153046474983581941267398767559165543946077062914571196477686542167660429831652624386837205668069376L
>>> import math
>>> math.sin(2.3)
0.745705212177
>>> from math import *
>>> sin(2.3)
0.745705212177
>>> print "apple"
apple
>>> "apple"
'apple'
>>> print str("apple")
apple
>>> print repr("apple")
'apple'
>>> l = range(10)
>>> l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> l[:4]
[0, 1, 2, 3]
>>> l[-2:]
[8, 9]
>>> l[0:len(l)]
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> l[1:1]=[8,8,8]
>>> l
[0, 8, 8, 8, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> for i in range(10):
...   print hex(i)
...
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
>>> for i in range(10):
...   print hex(i),
...
0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7 0x8 0x9
>>> import string
>>> string.replace("people", "peo", "ap")
'apple'
>>> string.split("1,2,3", ",")
['1', '2', '3']
>>> map(int, string.split("1,2,3", ","))
[1, 2, 3]
>>> "a" * 10
'aaaaaaaaaa'
>>> [1,2,3]*10
[1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3]
>>> [1,2] + [3,4]
[1, 2, 3, 4]
>>> import time
>>> time.time()
1035719478.04
>>> time.localtime(_)
(2002, 10, 27, 14, 51, 18, 6, 300, 0)
>>> time.localtime(time.time())
(2002, 10, 27, 14, 51, 38, 6, 300, 0)
>>> time.strftime("%d.%m.%Y %H:%M:%S", time.localtime(time.time()))
'27.10.2002 14:52:22'
>>>
<Ctrl>-<D>

$ mc

#!/usr/bin/python

print """
  Hello, World!
"""

<F2>
primer.py

chmod +x primer.py

./primer.py