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In simple, if we have a book in a box, then box is a
variable and book is stored values.
Rules for naming a variables:
1. Python Variables start with either Upper case (A-Z) or Lower case (a-z) or Underscore character(_). Example: _myvalue, myalue, Myvalue…
2. We can use digits (0-9), but we cant start a variable with digit. Example: 1count, 1value are invalid variables. My1value, my_value1 are valid variables.
3. Variables are case sensitive. Example: myname and Myname are different variables.
Example Programs to understand use of Python Variables better:
1. Program
for using different variables with same name:
myname="Python"
print(myname)
myName="coding"
print(myName)
Myname="doit"
print(Myname)
Output:
Python
coding
doit
2. Program
to find type of a variable:
a="Python"
print(type(a))
a=10
print(type(a))
a=10.24
print(type(a))
a=True
print(type(a))
Output
<class
'str'>
<class
'int'>
<class
'float'>
<class 'bool'>
3. Program to assign same values to different
variables:
a=20
b=20
c=20
print(a)
print(b)
print(c)
Output
20
20
20
4. Program to assign same values to different
variables in single line
a=b=c=20
print(a)
print(b)
print(c)
Output
20
20
20
5. Program to assign different values to different variable:
x=10
y=20
z=30
print(x)
print(y)
print(z)
Output
10
20
30
6. Program to assign different values to different
variable in single Line:
x,y,z=10,20,30
print(x)
print(y)
print(z)
Output
10
20
30
7. Program to assign different values to different
variable and print different values in single line
x,y,z=10,20,30
print(x,y,z)
Output
10 20 30
8. Program to assign different String values to
different variable
x,y,z="Apple","Boy","Cat"
print(x)
print(y)
print(z)
Output
Apple
Boy
Cat
9. Program to assign multiple strings to variable:
x="Hello
Viewers, Welcome"
print(x)
Output
Hello Viewers,
Welcome
10. Program to assign different type values to
different variable:
a,b,c="10","20.45",
"Hello"
print(a,b,c)
Output
10 20.45
Hello
Thanks and Regards
J.Divyabharathi Veera
