First python ② Try to write code while examining the features of python

background

I will participate in an in-house study session on the theme of "Let's make a Web system in a language that I have never touched". Since I was in charge of python research, this is the second installment to summarize the research. The first half is mainly an excerpt from wikipedia.

What is python

• Open source object-oriented scripting language
• The latest version as of July 8, 2013 is 3.3.2
• Official site http://www.python.org/

Features of python

notation

• Grammar restrictions are strong, and the style of the program is almost the same regardless of the writer.
• Use indentation for block structure
• 80 characters per line (recommended only)

Data type

• Data is dynamically typed. The value itself has a type and all variables are references to the value
• List = Array-like feeling
• Tuple = It looks like an array whose value cannot be changed. Can also be used as a map key

Object-orientation

• All data that Python can handle are objects

Let's compare

I rewrote my eldest daughter's math problem script that I wrote in Ruby earlier in python. The impression I wrote is as follows. (I haven't done much, so it's not a big impression, but ... I'll add it as needed.)

• It's hard to see personally that there is no end in if and while (familiarity?)
• Well, but it doesn't feel like it's difficult to write
• I just like Ruby better

keisan.rb

#!/usr/bin/env ruby
# -*- encoding: utf-8 -*-
 
question_num = 10
score = 0
i = 0
 
while i < question_num do
  val1 = rand(10)
  val2 = rand(10)
 
  print "(#{i + 1}) "
  case rand(2)
  when 0
    print "#{val1} + #{val2} = "
    correct_ans = val1 + val2
  when 1
    if val1 >= val2
      print "#{val1} - #{val2} = "
      correct_ans = val1 - val2
    else
      print "#{val2} - #{val1} = "
      correct_ans = val2 - val1
    end
  end
 
  ans = gets.to_i
 
  if correct_ans == ans
    p "Qinghai wave#{correct_ans}"
    p "You did it! !!"
    score += 1
  else
    p "Qinghai wave#{correct_ans}"
    p "I'm sorry! !!"
  end
  i = i + 1
end
 
p "Your tensu#{((score.to_f / question_num.to_f) * 100).to_i}Ten! !!"

keisan.py

#!/usr/bin/env python
# -*- encoding: utf-8 -*-

import random

question_num = 10
score = 0
i = 0

while i < question_num:
  val1 = random.randint(0,9)
  val2 = random.randint(0,9)
  operator_flg = random.randint(0,1)

  print("(" + str(i + 1) + ") ", end=&#39;&#39;)

  if operator_flg == 0:
     formula = str(val1) + " + " + str(val2) + " = "
     correct_ans = val1 + val2
  elif operator_flg == 1:
    if val1 >= val2:
      formula = str(val1) + " - " + str(val2) + " = "
      correct_ans = val1 - val2
    else:
      formula = str(val2) + " - " + str(val1) + " = "
      correct_ans = val2 - val1

  ans = input(formula)

  if correct_ans == int(ans):
    print("Qinghai wave" + str(correct_ans))
    print("You did it! !!")
    score += 1
  else:
    print("Qinghai wave" + str(correct_ans))
    print("I'm sorry! !!")

  i += 1

print("Your tensu" + str(int(float(score) / float(question_num) * 100)) + "Ten! !!")