I think every one of us is aware of the “Hello World” Program, that you script when you master a language like Python.
How to Create a Hello World Program in Python
Open Your Start Menu and select Python command Line.
You will see a line like >>>
With this, you can do everything in a communicative, and Interactive mode in Python Interpreter. Where >>> come in. Moreover, Python Shows you >>>, when you are going to type something in the command line.
At the prompt, type the below line, use only a single quote at the start and end, it's beside the Enter key.
print('Hello World!')
Then press the Enter Key.
Python Runs the code, that you type.
You can see the Output, as below, I think, if you write this program for the first time, then this is your first program and Output.
Output
Python 2.7.9 < default, Dec 2019, 05:43:54> [MSC V.1500 32 bit
Type “help”, “copyright” or “license” for more information.
>>> print<‘ hello world ’> Hello, world! >>> _ If you dint see the Above Output, on your System, in the same way, do the following.
Check what you have typed from step 2.
The Single Quotes and Parentheses in the right positions.
Check, in the same way for every opening parenthesis, that there is a closing Parenthesis, that you left hanging.
Check for Every Opening Quote, there is a closing quote.
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Tips for how you code in Python
Note:
Every programming language, have Inbuilt Own reference and Grammar Rules. Moreover, These Rules, are known as Language Syntax.
Finish Your Lab Work
Generally, we do fractions in our Python Lab. Use those Fractions, methods, and fraction Objects, that select the Digit and Numerator.
For getting the One-half, type fractions.fraction(1,2). For four-fifths, type fractions.fraction(4,5):
>>> import fractions >>> one_half = fractions.Fraction(1, 2) >>> one_fifth = fractions.Fraction(1, 5)
With fractions, we do normal fraction calculations > one_half+one_fifth
Fraction(7, 10)
>>> one_half-one_fifth
Fraction(3, 10)
>>> one_half*one_fifth
Fraction(1, 10)
>>> one_half/one_fifth
Fraction(5, 2)
What are Python Keywords?
Generally, every one of us knows, programming is an important skill. As a matter of fact, below are the code words of Python, built-ins, set library functions, operators, that you use most when you do programming with Python.
Keyword
And – Logical Operator, for testing two things, whether they are true or not.
As – Assign a File object to a Variable, similarly if your code differs from a unit under a different name, that used with Import.
Break – It stops executing a Loop.
How to script with Python Widgets
Python Widgets are Set Graphical User Interface Elements, similarly many buttons, and menus.
Option Menu Widget
Especially, Options Menu Widget will let you select, from a list of options. That is for using the Options menu, in the right way. In the same fashion, You may bind it to a separate call back. That which update, other Data, which is based on user selection.
import Tkinter
parent_widget = Tkinter.Tk()
control_variable = Tkinter.StringVar(parent_widget)
OPTION_TUPLE = ("Option 1", "Option 2", "Option 3")
optionmenu_widget = Tkinter.OptionMenu(parent_widget,
control_variable, *OPTION_TUPLE)
optionmenu_widget.pack()
Tkinter.mainloop()Menu Widget:
Generally, With the menu Widget, you can design a Menu bar. Designing menus is hard. If you concentrate on Drop-Down Menus. Consequently, by doing that, you can use a Separate menu, widget for every drop-down menu when you design it.
import Tkinter
parent_widget = Tkinter.Tk()
def menu_callback():
print("I'm in the menu callback!")
def submenu_callback():
print("I'm in the submenu callback!")
menu_widget = Tkinter.Menu(parent_widget)
submenu_widget = Tkinter.Menu(menu_widget, tearoff=False)
submenu_widget.add_command(label="Submenu Item1",
command=submenu_callback)
submenu_widget.add_command(label="Submenu Item2",
command=submenu_callback)
menu_widget.add_cascade(label="Item1", menu=submenu_widget)
menu_widget.add_command(label="Item2",
command=menu_callback)
menu_widget.add_command(label="Item3",
command=menu_callback)
parent_widget.config(menu=menu_widget)
Tkinter.mainloop()
How You can Name Functions In Python
Functions are known as the best and most powerful tools, in the programming toolbox. Because they accept, you to separate your program, into best and meaningful blocks.
For every Plug-in in Python, the function is from the Set library.
The Rules for naming a Function are like naming a Variable.
It is lengthier, but we should arrange them shorter.
They have numbered.
Functions should be lower case.
They have to start with underscore or letters.
Functions are Not python keywords. In the same way, they will have the same name as the Existing function, but we have to avoid this as of Now.
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Why use Python?
Python is a popular programming language across the globe in the current era. It makes it easier to write basic programs and scripts, and also we can build large and complex enterprise solutions. Here are a few samples of using this programming language.
Developing various desktop apps, GUI apps and tools and a few games also can create.
Easy to do scientific and technical analysis of data.
Growing internet and web apps.
Performing computer devices administration and automating tasks across systems.
Easy to read and maintainable code for every script.
Highly robust and typical library set.
Also, has many open-source frameworks and tools available with this language.
Offers a test-driven approach for executing codes and testing at the same time.
The best useful coding language for growing both desktop and mobile web apps.
Moreover, this language is most popular with giant companies of the globe like YouTube, Dropbox, etc.
Features
The important features that this programming language includes:
This is a free and open-source programming language to use for even commercial purposes.
Being an open-source platform, anyone can contribute towards Python programming development.
Most powerful and versatile language for small codes and scripts to automate repetitive tasks.
It is a dynamically typed language with good data interpretation.
Also, it offers you to write codes and scripts in different styles and formats including Oops, functional, etc.
Simple to use and understand syntax. Great community support with global developers and tech enthusiasts.
Also, useful for different business sectors including finance. The game development industry is also using this language for the quick development of any prototype.
Furthermore, it is compatible to use with different platforms such as Windows, macOS, LINUX, etc.
Hence, these features and benefits and above all regarding this programming language are enough to say that this is the best one to learn.
Conclusion
Using Python for developing small and even large complex apps and web development is really a great task. This language is very flexible to use with open-source availability and developing apps for different purposes. You have learned so far about how to use functions, how to script widgets, using keywords, etc. This coding language has different libraries and tools for free use and one can develop various apps through this. Thus, getting into learning is flexible and easy to understand this language.
I think this blog will help you in, how you can code in python and, up to my knowledge, coding is simple when we master the basics of any programming language. Just like alphabets in the English Language. For Every Language, Fundamentals are Important.
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