How to reduce if else statement in python
All you need to do in this case is construct a string from the integer value Show
Further in the interests of simplification, redirecting stdout and restoring it is a cumbersome method of outputting to a file. Instead, you can write directly to the file:
Note that because we use the
Even if you did use the conditionals each one differs only in the first line, so only that part need be conditional and the remainder of the content performed after the conditionals. Moreover all conditionals are mutually exclusive so you can use
In circumstances where there is no direct arithmetic relationship between
If Statement is a primary logic method in Python and we can find them everywhere in Python code. As a beginner, you often write long lines of code to check if something is the case and execute something based on the result of the condition. If statements are great tools, but as the number of branches grows, they quickly become unwieldy. In this article, we will explore two alternatives to if statements: Imagine you have an if statement like this one (assume the In "match...case", we still need to tell Python what the different options are, and what to do in each case:
While this looks a bit better, there is still much of the
same duplication. Each conditional branch has the Overall, the length of the code block is the same. Plus the biggest problem of all remains: that as you add more options, the branching conditional will grow too. Use a dictionary to simplify a long if statementInstead of the log if-elif chain or a long match-case chain, you could store the user's options in a dictionary:
Then you could ask the user for which of the options (from the dictionary) they'd like to use:
With this, we can retrieve the function from the dictionary directly:
Since the dictionary maps strings to functions, the All that's left is to run We should also do some error checking, to make sure we don't try to run a function that doesn't exist if the user entered something that isn't one of the dictionary's keys.
You still need the one if statement just in case the user chooses something that doesn't have a key in the dictionary, but this is a single-branch if statement that won't grow over time. Another benefit is that you can easily tell the user which options are available to them by using the dictionary keys:
ConclusionIn this post we've seen two ways you can simplify if statements: by using "match...case" and by using dictionaries. If you want to learn more about Python, consider enrolling in our Complete Python Course which takes you from beginner all the way to advanced (including OOP, web development, async development, and much more!). We have a 30-day money-back guarantee, so you really have nothing to lose by giving it a try. We'd love to have you! Photo by Christin Hume on Unsplash How do you reduce if4 Simple and Effective Ways To Avoid Too Many Ifs With TypeScript. Nested if-else or multiple level nesting (worse). Too many if-elses cause large numbers of condition branches.. Complex condition statement with mixed flags.. How do you shorten a long if statement in Python?The preferred way of wrapping long lines is by using Python's implied line continuation inside parentheses, brackets and braces. Long lines can be broken over multiple lines by wrapping expressions in parentheses. These should be used in preference to using a backslash for line continuation.
How do you optimize multiple if3 Answers. Using Explicit and for Logical Expressions. ... . Remove Redundant Conditions. ... . Avoid Repeated Computations in Conditions. ... . Simplify Logic. ... . Apply Python-specific Optimizations. ... . Adjust Order of Conditions based on Input Distribution. ... . Using Lookup Tables.. What can be used instead of ifSwitch Case is a cleaner and faster alternative to if-else conditions in your code. Python does not directly support Switch Case but it does provide some very useful and efficient workarounds.
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