1 def f(x):
2 return x*x
3 print map(f,[1,2,3,4,5])
4
5 [1, 4, 9, 16, 25]
6
7 def format_names(s):
8 return s[0].upper()+s[1:].lower()
9 print map(format_names,['adam','LISA','barT'])
10
11 ['Adam', 'Lisa', 'Bart']
12
13 def prod(x,y):
14 return x*y
15 print reduce(prod,[2,4,5,7,12])
16
17 3360
18
19 import math
20
21 def is_sqr(x):
22 r=int(math.sqrt(x))
23 return r*r==x
24 print filter(is_sqr,range(1,101))
25
26 [1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
27
28 sorted([36,5,12,9,21])
29 Out[7]: [5, 9, 12, 21, 36]
30
31 def reversed_cmp(x,y):
32 if x>y:
33 return -1
34 if x<y:
35 return 1
36 return 0
37 sorted([36,5,12,9,21],reversed_cmp)
38
39 Out[8]: [36, 21, 12, 9, 5]
40
41
42 def cmp_ignore_case(s1,s2):
43 u1=s1.upper()
44 u2=s2.upper()
45 if u1<u2:
46 return -1
47 if u1>u2:
48 return 1
49 return 0
50 print sorted(['bob','about','Zoo','Credit'],cmp_ignore_case)
51
52 ['about', 'bob', 'Credit', 'Zoo']
53
54 def calc_prod(lst):
55 def lazy_prod():
56 def f(x,y):
57 return x*y
58 return reduce(f,lst,1)
59 return lazy_prod
60 f=calc_prod([1,2,3,4])
61 print f()
62
63 24
