Identifiers
Ex:
a=10
b=’xyz’
Here a And b are identifiers.
Identifiers can start with _ or a-z or A-Z & alphabet followed by number (0-9) but not with 0-9
# Starting of python programing ''' Multy line comment bla bla bla and that it ''' print("This is very begging") a=10 b='xyz' print(a,b) _a = 50 print(_a) _2 = 'xyz' print(2) _A = 1000 print(_A) __x__ = 20 print(__x__)_a0 = 'multy combination' print (_a0)
o/p
This is very begging
(10, ‘xyz’)
50
2
1000
20
multy combination
Operators
Operator can be Arithmetic, logical, comparison, bitwise, membership, Assignment, Identity .
Arithmetic
+ (Addition)
– (Subtraction)
* (Multiplication)
/ (Division)
% (Modulus)
** (exponent)
//(floor division)
Assignment
Assign value from right to left a =b
a = a+b ==> a += b
a = a-b ==> a -= b
a = a*b ==> a *= b
a = a/b ==> a /= b
a = a**b ==> a **= b
a = a//b ==> a //= b
Comparison
==, != , >, <, >=, <=
Logical
And, or, Not
Bitwise
a&b and
a|b or
a^b xor
a~b binary not
a<< left shift a>> right shift
Identity
is
is not
Membership
in
not in
linuxmadeeasy 