Python raise exception

Except as Exception:

>>> def catch():
...     try:
...         asd()
...     except Exception as e:
...         print e.message, e.args
... 
>>> catch()
global name 'asd' is not defined ("global name 'asd' is not defined",)

Source: stackoverflow.com

Python raise exception

	# this raises a "NameError"

>>> raise NameError('HiThere')

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: HiThere

Source: docs.python.org

Throw error in python

#Best practive: raise statement	
raise ValueError('A very specific bad thing happened')

Source: stackoverflow.com

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')

Python raise TypeError

def prefill(n,v):
    try:
        n = int(n)
    except ValueError:
        raise TypeError("{0} is invalid".format(n))
    else:
        return [v] * n

Source: stackoverflow.com

Python file open try except error

def FileCheck(fn):
    try:
      open(fn, "r")
      return 1
    except IOError:
      print "Error: File does not appear to exist."
      return 0

result = FileCheck("testfile")
print result

Source: stackoverflow.com

Similar codes

0 vote305 views1 answer
Python event start from file funcion
Python
1 vote339 views1 answer
Import bokeh
Python
1 vote289 views1 answer
How to scroll down to end of page in selenium python
Python
4 votes297 views2 answers
The list of prime number in a given range python
Python
0 vote349 views1 answer
Colab erase recycle bin drive
Python
1 vote281 views1 answer
Da
Python
0 vote361 views1 answer
How to make it so we can give unlimited parameters in python function
Python
1 vote301 views2 answers
Remove 1st column pandas
Python
6 votes361 views6 answers
How to check if a value is nan in python
Python
1 vote292 views1 answer
Pythonic
Python