Архив метки: Python

Python – ternary conditional statement (if, or, else)

Ternary operator (Ternary operator) – used in line to set conditions in assigning a value to a variable. It is easier to understand this with examples.

cat_say = “Mew”

me_say = “Hi,cat” if cat_say == “Mew” or cat_say == “Myavki” else “Who are you?”

print(me_say)

Hi,cat #result

The ternary operator essentially includes the name of the variable to which we assign a value and inside the same line we set the conditions described by the if / or / else statements. It is not necessary to use all three if/or/else statements, just if/else can be used in the condition.

Important: The ternary conditional operator in Python can be used with both strings and numbers.


Python: Problems and Solutions (Chapter 6. Functions. Tic-Tac-Toe Game).

We continue to practice programming. After the sixth chapter in the book: Michael Dawson “Programming in Python”, 2014 (Michael Dawson “Python Programming for the Absolute Beginner”, 3rd Edition), where I learned how to use functions, it’s time to move on to practice. Let’s do our homework together!

Function refinement ask_number() / hod_number()

Task: Modify the ask_number() or hod_number() function so that it can be called with one more parameter – multiplicity (step size). Set the default stride to 1.

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Python: Problems and Solutions (Chapter 7 Files and Exceptions Quiz Game)

We continue to practice programming. After the seventh chapter in the book: Michael Dawson “Programming in Python”, 2014 (Michael Dawson “Python Programming for the Absolute Beginner”, 3rd Edition), where I learned how to work with files, it’s time to move on to practice. Let’s do our homework together!

A short summary of working with files in Python

Open and close a file

open() – open file and give directory path;

open("file", "r", encoding="utf-8") – open file for reading in Unicode encoding. Читать →

Python – programming environment and additional programs

When you have installed Python, the question arises – how to start learning this language? Should I write commands through the console or do I need to install something else on the computer? There are many programming environments and solutions for Python, but for a beginner, it is preferable to choose from two:

  • if you are learning Python for scientific purposes, then download Anaconda from www.continuum.io/downloads – this environment already includes Python, as well as such useful programs for programming and analytics as Spyder, Jupyter, IPython, R and others.

  • you are learning Python for general development, then install the cool Sublime Text code editor from sublimetext.com; in this case, you will need to manually configure the Python interpreter to run the program written in this editor.

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Python – show result to user

When we write any program in any programming language, sooner or later we want the result of our programming to be shown to the user. For this we use the command:

print(…) must be lowercase

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Python: списки и словари

Продолжаем учить язык программирования пайтон Python. Переходим к изучению 5 главы по книге: Майкл Доусон “Программируем на Python”, 2014 (Michael Dawson “Python Programming for the Absolute Beginner”, 3rd Edition), где освоим списки, списочные методы и словари.

Списки в Python

Списки похожи на кортежи, которые мы изучали в прошлой главе. Важно запомнить, что в отличие от кортежей, списки могут изменяться. Общие принципы работы с кортежами применимы к спискам. Читать →