Built In Exceptions in Python

Question

In this article : https://www.geeksforgeeks.org/built-exceptions-JUMP_LINK__&&__python__&&__JUMP_LINK/
it is mentioned that using " locals()['__builtins__'] " we can view all built in exceptions but I am getting only this output : <module 'builtins' (built-in)>

Answer 1

#Try this:
print(list(filter(lambda x: x.lower() != x, dir(__builtins__))))

Answer 2

If you want to read about a module, you can use help()

It will return a long content, which may give you a Time Limit on Sololearn, but if you try it on your ide, you'll have a nice detailed description.

print(help(locals()['__builtins__']))

Answer 3

harshit Actually I am not sure what it is trying to mean with it. I did not get it work to return a list of Exceptions.
Instead it returned the __builtins__ module, like you may have already discovered.
Anyways you'll get a list of the errors with other builtin functions by printing dir(__builtins__).

Answer 4

Seb TheS can you explain how does the first one(your answer) functions to give all exceptions.

Answer 5

harshit Yes.
__builtins__ is the namespace for all the builtin names (classes, functions and variables), that don't have any specific class.

dir() returns all the names as list of strings from a certain namespace.

lambda x: x.lower() != x
is a function definition.
When called, it expects x as string, and tests if lower case x is equal to original x.
Warnings and errors are all capitalized, unlike the other names.
It returns True, if x includes any upper case characters, otherwise it returns False.

filter calls the function for each values of the list and if the lambda function returns True, the value is included in a new raw list type, and if it returns False, the value is ignored.

Then only capitalized errors and warnings were included.

Because the list type returned by filter cant be really used like it is, it is converted to a list and then printed.

Answer 6

You can type __builtins__.
press TAB and you will see all the builtins of python.

Answer 7

Seb TheS is the method mentioned in the link is wrong ?