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Python is a powerful programming language that offers a wide range of features to make code more readable and concise. One such feature is the ability to chain function calls together in a single line.
Let us briefly write an example and then explain it:
def add(a, b):
return a + b
def subtract(a, b):
return a - b
a, b = 4, 5
print((subtract if a > b else add)(a, b)) # 9 
In today’s digital age, unique identification is becoming increasingly important. Whether it’s for security purposes, data management, or simply keeping track of things, having a way to generate unique values is essential. One of the most popular ways to do this is through the use of UUIDs, or Universally Unique Identifiers.
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In Python, tuples and lists are two commonly used data structures for storing collections of items.
The main difference between them is that tuples are immutable, meaning their elements cannot be changed after they are created, while lists are mutable, meaning their elements can be modified.
This immutability of tuples makes them more memory efficient and faster than lists since they can be used as keys in a dictionary and in sets.
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One way to improve the concision of your Python code is by using the ternary operator, a handy tool that allows you to condense an if-else statement into a single line of code.
Let us jump straight into it.
Imagine that you have the following comparison:
x = 5
y = 10
if x > y:
result = x
else:
result = yYou can then write it in a single line:
result = x if x > y else y
The Python Counter class from the collections module is a powerful tool that we can also use for counting the occurrences of elements in a list.
The majority of the world puts days in front of months in their dates:
However, there can be cases when you get as input a date where the month is in front of the day.
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A leap year is a year that has 366 days instead of the usual 365. It occurs every four years and is the year when an extra day, February 29th, is added to the calendar. This day, known as a leap day, helps to keep the calendar aligned with the Earth’s movements around the sun. Leap years occur every four years, with the next one occurring in 2024.
We can check whether a year is a leap year in Python in a few ways.
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If you need to get the number of days in a month in Python, you can do that quite quickly.
We are going to do that using the calendar module.
First, import the calendar module and then call the method monthrange() which returns the first_day and also the number_of_days in a month.
Let us see this in action:
import calendarContinue reading
# Get current month
_, number_of_days = calendar.monthrange(2023, 2)
print(number_of_days) # 28
In some companies, they pay their employees on the first day of every month.
If you want to know what day of the week will that be, you can find that quickly in Python using the calendar module.
Let us assume that you want to check the first day of the next month:
import calendarContinue reading
first_day, _ = calendar.monthrange(2022, 12)
If you want to delete every other element in a list in Python, you can do that fairly quickly.
Let us assume that we want to delete elements that are in positions 0, 2, 4, 6, meaning that we are starting from index 0 and we are adding 2 for every next element that we are deleting.
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