FilesExpand file tree

 master

/

generators_pythonic_1.py

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

71 lines (53 loc) · 1.17 KB

 master

/

generators_pythonic_1.py

Copy path

Top

File metadata and controls

• Code
• Blame

71 lines (53 loc) · 1.17 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

"""Clean Code in Python - Chapter 7: Using Generators

> Idiomatic Iteration

"""

class NumberSequence:

"""

>>> seq = NumberSequence()

>>> seq.next()

0

>>> seq.next()

1

>>> seq2 = NumberSequence(10)

>>> seq2.next()

10

>>> seq2.next()

11

"""

def __init__(self, start=0):

self.current = start

def next(self):

current = self.current

self.current += 1

return current

class SequenceOfNumbers:

"""

>>> list(zip(SequenceOfNumbers(), "abcdef"))

[(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd'), (4, 'e'), (5, 'f')]

>>> seq = SequenceOfNumbers(100)

>>> next(seq)

100

>>> next(seq)

101

"""

def __init__(self, start=0):

self.current = start

def __next__(self):

current = self.current

self.current += 1

return current

def __iter__(self):

return self

def sequence(start=0):

"""

>>> seq = sequence(10)

>>> next(seq)

10

>>> next(seq)

11

>>> list(zip(sequence(), "abcdef"))

[(0, 'a'), (1, 'b'), (2, 'c'), (3, 'd'), (4, 'e'), (5, 'f')]

"""

while True:

yield start

start += 1