CODEWITHSUNDEEP
pythonpython-3.x
Ian Arad
Ian Arad

Reputation: 23

Python | return something similar to "os.get_terminal_size"

I want to implement something similar to the return of os.get_terminal_size

print(myFunction())

myFunction(a=1, b=2)

print(myFunction().a)    # 1

print(myFunction().b)    # 2

example:

import os
os.get_terminal_size()
'os.terminal_size(columns=169, lines=40)'

os.get_terminal_size().columns
169

type(os.get_terminal_size)
'<class 'os.terminal_size'>'

How can I do that?

Upvotes: 1

Views: 362

Answers (2)

wonton
wonton

Reputation: 8247

My interpretation of your question is that you want to implement get_terminal_size yourself in a different way.

shutil.get_terminal_size wraps os.get_terminal_size and basically performs an optimization where it looks up your ${COLUMNS} and ${LINES} environment variables as a shortcut. Failing the lookup, it defers to os.get_terminal_size. Its source code is here.

As for the implementation of os.get_terminal_size, it is written in c and under the hood leverages either ioctl or conio.h. The code lives here.

Upvotes: 1

furas
furas

Reputation: 142641

type(os.get_terminal_size) shows that it is a class, not function.

First line also shows that it has method __str__ to display formatted text with values

class MyClass:

    def __init__(self):
        self.columns = 169
        self.lines = 40

    def __str__(self):
        return 'MyClass(columns={}, lines={})'.format(self.columns, self.lines)

print(MyClass())
# MyClass(columns=169, lines=40)

print(MyClass().columns)
# 169

EDIT:

It also doesn't get arguments but if you want to arguments then you would need

class MyClass:

    def __init__(self, columns=169, lines=40):
        self.columns = columns
        self.lines = lines

    def __str__(self):
        return 'MyClass(columns={}, lines={})'.format(self.columns, self.lines)

print(MyClass())
# MyClass(columns=169, lines=40)

print(MyClass(columns=1, lines=2))
# MyClass(columns=1, lines=2)

But it can't keep values - it would need instance of class to keep them.

print(MyClass(columns=1, lines=2).columns)
# 1

print(MyClass().columns)
# 169

my_instance = MyClass(columns=1, lines=2)
print(my_instance.columns)
# 1

Upvotes: 2

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