basic.txt

python programing
2+3=5
4-5=-1
3*5=15
1.when we perform division operation it will always give us floating point answer
5/2=2.5
2. 5//2=2 when we want output in int value then we use // in case of division
it is also use boadmas rule
5+8*9/3
29.0
5+8*9//3
3. when we want to perform exponent operation we use symbol ** which is exponent of
for example 2**3 this mean 2 exponent of 3
4.modulas operation 
10%3=1
5. we can define string using ' single quote " or double quote
6. \ back slash in front of single quote its meaning ignore single quote then
7. \n is new line in python
>>> print('c:\nanjadnja')
c:
anjadnja
>>> print(r'c:\nsakndkand')
c:\nsakndkand
when we use r in print will string as raw so it will print exatly the same as we give
when we multiply string by some number it will give that time string
>>> print('mandjand'*10)
mandjandmandjandmandjandmandjandmandjandmandjandmandjandmandjandmandjandmandjand