Example of calculating the number of book pages in python

This article describes how to calculate the statistical number of a book page number in python. compared with the two examples, it describes the digital statistics technique, which is very practical, for more information about how to calculate the number of pages of a book in python, see the following example. it is a typical application in Python programming. Share it with you for your reference. The details are as follows:

Problem Description: For the given page number n, calculate the number of numbers 0, 1, 2, 3, 4, 9 used in all pages respectively

The instance code is as follows:

def count_num1(page_num):   num_zero = 0   num_one = 0   num_two = 0   num_three = 0   num_four = 0   num_five = 0   num_six = 0   num_seven = 0   num_eight = 0   num_nine = 0   page_list = range(1,page_num + 1)   for page in page_list:     page = str(page)     num_zero += page.count('0')     num_one += page.count('1')     num_two += page.count('2')     num_three += page.count('3')     num_four += page.count('4')     num_five += page.count('5')     num_six += page.count('6')     num_seven += page.count('7')     num_eight += page.count('8')     num_nine += page.count('9')   result = [num_zero,num_one,num_two,num_three,num_four,num_five,num_six,num_seven,num_eight,num_nine]   return result  print count_num1(13) 

The code above is a little bloated, so I changed the code.

The modified code is as follows:

def count_num2(page_num):   page_list = range(1,page_num + 1)   result = [0 for i in range(10)]   for page in page_list:     page = str(page)     for i in range(10):       temp = page.count(str(i))       result[i] += temp   return resultprint count_num2(13)

The testing environment of this example is Python2.7.6.

The program output result is:

[1, 6, 2, 2, 1, 1, 1, 1, 1]

I hope this article will help you with Python programming.