Notes

Reserved Words
In Python some words are reserved to represent some meaning or functionality. Such type
of words are called Reserved words.
There are 33 reserved words available in Python.

True,False,None
and, or ,not,is
if,elif,else
while,for,break,continue,return,in,yield
try,except,finally,raise,assert
import,from,as,class,def,pass,global,nonlocal,lambda,del,with
Note:
1. All Reserved words in Python contain only alphabet symbols.
2. Except the following 3 reserved words, all contain only lower case alphabet symbols.
True
False
None
Eg: a= true 
a=True √
>>> import keyword
>>> keyword.kwlist




Python contains the following inbuilt data types
1. int
2. float
3.complex
4.bool
5.str
6.bytes
7.bytearray
8.range
9.list
10.tuple
11.set
12.frozenset
13.dict
14.None

list data type:
If we want to represent a group of values as a single entity where insertion order required
to preserve and duplicates are allowed then we should go for list data type.
1. insertion order is preserved
2. heterogeneous objects are allowed
3. duplicates are allowed
4. Growable in nature
5. values should be enclosed within square brackets.

tuple data type:
tuple data type is exactly same as list data type except that it is immutable.i.e we cannot
chage values.
Tuple elements can be represented within parenthesis.



frozenset Data Type:
It is exactly same as set except that it is immutable.
Hence we cannot use add or remove functions.

Q. Program for minimum of 3 numbers
1)
2)
3)
4)
5)
a=int(input("Enter First Number:"))
b=int(input("Enter Second Number:"))
c=int(input("Enter Third Number:"))
min=a if a<b and a<c else b if b<c else c
print("Minimum Value:",min)
Q. Program for maximum of 3 numbers
1)
2)
3)
4)
5)
a=int(input("Enter First Number:"))
b=int(input("Enter Second Number:"))
c=int(input("Enter Third Number:"))
max=a if a>b and a>c else b if b>c else c
print("Maximum Value:",max)
Eg:
1) a=int(input("Enter First Number:"))
2) b=int(input("Enter Second Number:"))
3) print("Both numbers are equal" if a==b else "First Number is Less than Second Number" if
a<b else "First Number Greater than Second Number")




Special operators:
Python defines the following 2 special operators
1. Identity Operators
2. Membership operators
1. Identity Operators
We can use identity operators for address comparison.
2 identity operators are available
1. is
2. is not
r1 is r2 returns True if both r1 and r2 are pointing to the same object
r1 is not r2 returns True if both r1 and r2 are not pointing to the same object

2. Membership operators:
We can use Membership operators to check whether the given object present in the
given collection.(It may be String,List,Set,Tuple or Dict)
in  Returns True if the given object present in the specified Collection
not in  Retruns True if the given object not present in the specified Collection