Exceptions in python which covers all category of errors where everyone can understand

1. Builtin exception examples
1) ZeroDivisionError (It is raised when number is divided by 0)
a=int(input())
b=int(input())
try:
c=a/b
print(c)
except ZeroDivisionError:
print("b cant be 0")
2) ValueError (It is raised when the arguments passed to the function are of invalid data
type)
Example 1:
try:
a=int(input())
print(a)
except ValueError:
print("Enter integer data only")
Example 2:
import math
try:
print(math.sqrt(-1))
except ValueError:
print("sqrt() must always accept valid type as an argument")
3) NameError (It is raised when identifier is not found in local or global
namespace)
try:

2. print(b)
except NameError:
print("b is not defined")
4) IndexError (It is raised when the index is not found in the sequence or index is
out of range)
try:
s="abcd"
print(s[4])
except IndexError:
print("index out of range")
5) KeyError (It is raised when key is not found in the dictionary)
try:
d={100:"Raju",101:"Ravi"}
print(d[102])
except KeyError:
print("Key is not present in dictionary")
6) KeyboardInterrupt (it is raised when user interrupts program execution by
pressing ctrl+c)
try:
a=int(input())
print(a)
except KeyboardInterrupt:
print("program execution has been terminated by pressing ctrl-c")
7) TypeError (it is raised when invalid operation is performed among different types)

3. try:
s="abcd"/5
print(s)
except TypeError:
print("/ operation is not possible for strings")
8) IOError (it is raised when input or output operation fails)
try:
f=open("file.txt","r")
print(f.read())
except IOError:
print("file does not exist for reading")
9) OverflowError (it is raised when maximum limit of numeric type is exceeded during
calculation)
try:
import math
print(math.pow(2000,1456))
except OverflowError:
print("result is out of range")
10) AttributeError (it is raised when attribute reference fails)
try:
l=[1,2,3]
l.add(4)
except AttributeError as e:

4. print(e) #prints 'list' object has no attribute 'add'
11) ImportError (it is raised when import statement fails)
try:
import koushik
except ImportError as e:
print(e) #No module named 'koushik'
12) UnboundLocalError (it is raised when attempt is made to access local variable in
function when no value has been assigned to it)
a=20
def f():
try:
a=a+1
print(a)
except UnboundLocalError:
print("local variable a is not defined any value but it is referenced")
f()