Software engineering and personal development
In many cases, we may have multiple conditions that we want to check, and going through each one of them can be a clutter.
First and foremost, we should keep in mind that we write code for other humans to read it. These are our colleagues that work with us, or people who use our open source projects.
As such, checking whether at least one condition is met can be done using a very quick way by using the method any().
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One of the most common ways to debug is by using print() functions in Python.
They are so commonly used all over the place that you may even end up seeing them in code that is included in production.
One thing that not a lot of people know is that you can include conditions in print() functions.
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A lambda function is a small anonymous function.
A lambda function can take any number of arguments, but can only have one expression.
Let us see a quick example of a lambda expression being used to square a number:
sqr = lambda x: x * xContinue reading
sqr(10) # 100
There can be cases when we want to check whether a value is equal to one of the multiple other values.
One way that someone may start using is using or and adding multiple checks. For example, let us say that we want to check whether a number is 11, 55, or 77. Your immediate response may be to do the following:
m = 1
if m == 11 or m == 55 or m == 77:
print("m is equal to 11, 55, or 77")
There is fortunately another quick way to do that.
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There are two methods that you can use to copy objects in Python, namely, copy() and deepcopy().
They are similar and can be confusing for a lot of people. There is however a subtle difference.
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You may need to read text files and do some formatting of those strings.
With formatting, it means that you may also need to replace a certain portion of the string with another string.
Let us assume that we have a sentence and want to replace all the occurrences of the word i with I.
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If you are working with many numbers in Python, you probably need to do some rounding to cut off some digits that you may not need at all.
For example, let us say that you are calculating an average salary in a company and the average number that you have found is around 54,334.218
This may not be a number that can look good in a final report that you want to submit to someone. It would help if you instead rounded it.
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A palindrome is a word that is the same whether you read it forwards or backward.
Checking whether an input string is a palindrome can be a common interview question that you may encounter at least in one of the technical rounds of your interviews.
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Lists are used pretty much all over the place in Python and in other programming languages as well.
Checking whether they have elements or not represents something that you may need to do.
One interesting thing about Python is that it allows you to do the same thing in more than just one way, as we can see in this case.
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The index in a string is the position of a substring that is part of that string.
When you want to check whether a string in Python starts with a specific character, you can specify the index 0 and write the name of the variable of the string in front:
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