Python, day1, and python

Python, day1, and python

1. # There is no single character operation in python, only string functions
2. >>> S = "www.google.com"
3. >>> S
4. 'Www .google.com'
5. >>> S. split ('.') # Cut all without Parameters
6. ['Www ', 'Google', 'com ']
7. >>> S. split ('.', 1) # Separate once
8. ['Www ', 'Google. com']
9. >>> S. split ('.') [1] # extract the first string separated '.'
10. 'Google'
11. >>> S. split ('.',-1) # If the value is smaller than 0, all slices are cut.
12. ['Www ', 'Google', 'com ']
13. >>> S1, s2, s3 = s. split ('.', 2) # values of s1, s2, and s3 are assigned to obtain the cut parts.
14. >>> S1
15. 'Www'
16. >>> S2
17. 'Google'
18. >>> S3
19. 'Com'
20. >>> S = ''' call # Cut line breaks!
21. Me
22. Baby '''
23. >>> S
24. 'Call \ nme \ nbaby'
25. >>> Print s # print Display Effect
26. Call
27. Me
28. Baby
29. >>> S. split ('\ n ')
30. ['Call', 'me', 'baby']
31. >>> S = "hello world! <[Www.google.com]> byebye "# classic example
32. >>> S
33. 'Hello world! <[Www.google.com]> byebye'
34. >>> S. split ('[') [1]. split (']') [0]
35. 'Www .google.com'
36. >>> S. split ('[') [1]. split (']') [0]. split ('.')
37. ['Www ', 'Google', 'com ']