catch error python

raise Exception("message")

try:
  print("I will try to print this line of code")
except:
  print("I will print this line of code if an error is encountered")

import traceback

dict = {'a':3,'b':5,'c':8}
try:
  print(dict[q])
 
except:
  traceback.print_exc()
  
# This will trace you back to the line where everything went wrong. 
# So in this case you will get back line 5    
  
  

import sys
try:
	S = 1/0 #Create Error
except: # catch *all* exceptions
    e = sys.exc_info()
    print(e) # (Exception Type, Exception Value, TraceBack)

############
#    OR    #
############
try:
	S = 1/0
except ZeroDivisionError as e:
    print(e) # ZeroDivisionError('division by zero')

# Python code to illustrate 
# working of try()  
def divide(x, y): 
    try: 
        # Floor Division : Gives only Fractional Part as Answer 
        result = x // y 
        print("Yeah ! Your answer is :", result) 
    except ZeroDivisionError: 
        print("Sorry ! You are dividing by zero ") 
  
# Look at parameters and note the working of Program 
divide(3, 0) 

  try:
  print(x)
except NameError:
  print("Variable x 
  is not defined")
except:
  print("Something else went 
  wrong") 

try:
    do_something()
except:
    print "Caught it!"

>>> 10 * (1/0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ZeroDivisionError: division by zero
>>> 4 + spam*3
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'spam' is not defined
>>> '2' + 2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: Can't convert 'int' object to str implicitly