Range () function developed by python

The range () function in python has powerful functions, so I think it is necessary to share it with you as if the range () function in python described in its API has powerful functions, so I think it is necessary to share it with you.

As described in its API:

If you do need to iterate over a sequence of numbers, the built-in function range () comes in handy. It generates arithmetic progressions

Sample code:

# If you need to traverse a numerical sequence, you can use the built-in function range () in python # for example, to traverse a list test_listtest_list = [1, 3, 4, 'hongten ', 3, 6, 23, 'hello', 2] for I in range (len (test_list): print (test_list [I], end = ',') print () print ('##################################### ') # or use the range () function to generate a list for I in range (5): print (I, end = ',') print () print ('##################################### ') # The built-in function range (10) in python. the parameter '10' indicates a sequence from 0 to 10. # print ('range (10) a sequence with a length of 10) ', range (10) listA = [I for I in range (10)] print (listA) print ('##################################### ') # of course, we can customize the starting and ending points we need # We define a starting point from 5, and the ending point from 100 print ('range (5,100) indicates: ', range (5,100) listB = [I for I in range (5,100)] print (listB) print ('##################################### ') # After defining these parameters, we can also define the step size # below we define a list of print ('range (, 3) with the step size from 1 to 30: ', range (1, 30, 3) listC = [I for I in range (1, 30, 3)] print (listC)

Running effect:

Python 3.3.2 (v3.3.2: d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (Intel)] on win32

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>>>================================== RESTART ==== ======================================

>>>

1, 3, 4, Hongten, 3, 6, 23, hello, 2,

#####################################

0, 1, 2, 3, 4,

#####################################

Range (10): range (0, 10)

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

#####################################

Range (5,100) indicates range (5,100)

[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, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]

#####################################

Range (1, 30, 3) indicates range (1, 30, 3)

[1, 4, 7, 10, 13, 16, 19, 22, 25, 28]

>>>