Python: Variables
Hi All,
Today we are going to learn python variables.
VARIABLES
- Commonly variables are keep some value like str, int etc.
- Python didn't use any command for declare variable, when the value 3. assigned first that moment variables are created and case sensitive.
- Variables don't need to be declared with any particular type and can even change the type after they set.
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Case Sensitive
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To get Variable type
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Rule for Create Variable
- Variable name should be start with char or underscore char.
- Should not be start with numbers.
- Should not be any of python key word.
Ex:
Proper Name:
my_variable_name = "Aravin" #snake type
myVariableName = "Aravin" #Camel type
MyVariableName = "Aravin" #Pascal type
myvarname = "Aravin"
_myvarname = "Aravin"
myvar_name = "Aravin"
myvar21 = "Aravin"
Improper Name:
2myVar = "Hello"
my-var = "Hello"
my var = "Hello"
To assign multiple values to multiple variable
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One value to multiple variable
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To unpack a collection
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Global Variable
- To be created outside the function called global variable Or created with global keyword.
- Global variable can be used by everyone both inside and outside function
Ex:
Created outside the function
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Variable created inside the function, with same name of global
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Create global variable by use global keyword inside the function
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Change global variable value inside the function
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