python optional variable assignment

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1. Python Assign Expression To A Variable Andit Stack

   

2. Defining Python Functions With Default and Optional Arguments

   

3. Python-3.X: How should I use the Optional type hint?

   

4. Python 2.7 Use Global Variable In Function

   

5. Python Variable (Assign value, string Display, multiple Variables & Rules)

   

6. 46 Javascript Function Parameter Default