Types of variables
There are two types of variables in python local and global variables.
• In Python, global variable is a variable declared outside of the function or in global scope.
• global variable can be accessed inside or outside of the scope function
Local variables
Local variables are the variables that are used with in a function or method.
Global variables
Global variables are used when we use the variable in the entire program.
Assigning values to variables
• Python allows us to assign values to the variables.
• Lets assume the value 5 is assigned to the variable ‘a’
Multiple assignment
• In multiple assignment , multiple variables are assigned with multiple values.
Example
Declaring and re-declaring the variables.
• Lets first see how to declare a variable. Its that simple that assigning variable a value to hold.
Example
>>> a=9
>>> print(a)
9
Now we re declare the variable.
a=9
print(a)
a= 33
print(a)
output:
33
Here the output gives the re assigned value instead of first value. This means that the first value is replaced by second value.
Deleting the variable
• In python you can delete the variable that you previously assigned the value using del command.
Example
a=7
print(a)
del a
print(a)