error trapping python code example

Example 1: how to print error in try except python

try:
  # some code
except Exception as e:
	print("ERROR : "+str(e))

Example 2: catch error python

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

Example 3: catch error data with except python

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')

Example 4: python check for exception

try: # put here the code that you expect to error 
  # code
except ValueError: # if you want to catch a ValueError
  # NOTE: you CANNOT catch a syntax error 
  # (UNLESS you are trying to execute code from a string with eval())
  
  # code if python caught the exception
except NameError: # you can catch multiple types of errors!
  # TIP: you can leave the error type blank to make python catch all types of errors!
  
  # code if another exception is caught (this is pretty much a modified if statement)
else: # if no error has been caught do the following:
  
  # code if no exception has been caught

Example 5: try python

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")