Merge pull request #11 from arpitHub/main

Merge New Post

Author: arpitHub

_posts/2024-04-02-python-underscode.md

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+---
+layout: post
+title: Uses of Underscore in Python
+subtitle: Underscore examples in Python
+cover-img: /assets/img/path.jpg
+thumbnail-img: /assets/img/thumb.png
+share-img: /assets/img/path.jpg
+gh-repo: arpithub/arpithub.github.io
+gh-badge: [star, fork, follow]
+tags: [python,python_tips]
+comments: true
+---
+
+We all have seen underscode symbol in Python. One of the most common uses of the underscore is as a placeholder variable. When iterating over a sequence or generating a range of values, there are often situations where the loop variable is not needed. In such cases, Python programmers opt to use _ as a concise way to indicate that the value is irrelevant to the current context.                                      
+
+```python
+for _ in range(10):
+    print("Doh!")
+```
+
+Here, _ acts as a placeholder for the loop variable, highlighting the intent to iterate a specific number of times without the need to reference the loop index.
+
+Moreover, _ serves as a convention for denoting unused variables. In scenarios where only one value from a function call or tuple unpacking is required, Python programmers often assign the unused value to _, signaling to others that the value is intentionally disregarded.
+
+```python
+first_name, _ = get_name()
+```
+This will return multiple parameters but we ignore other parameters except `first_name`.
+
+```python
+>>> 1 + 2 + 3
+6
+>>> _ * 5
+30
+```
+Here underscode saves the value of last expression ie. `1+2+3=5`
+
+In short, Underscore `_` can be used as a placeholder, unused variable indicator or temporary result storage. It makes our code readable and expressive. Happy Code Writing!