Help use "del" funcion !!

Question

Hello its me again :D. Okay i want ask how to use "del" ? i need this for codding not find in course with "del" ... i use this if something bad please explame me :)
a = ("Choose number 1")
print(a)
if 2 == 3:
del(a)

print("something")

Where i do bad? can explame with code show? Thanks ^^

Answer 1

del is a python statement, which can

a) delete a variable, i.e.

>>> a = 'my_variable'
>>> a
'my_variable'
>>> del a
>>> a
Traceback (most recent call last):
File "<pyshell#12>", line 1, in <module>
a
NameError: name 'a' is not defined

Usually you don't need to do this implicitly, as there is garbage collector in python.

b) delete an element from the list or dictionary. It can also delete a slice of elements from the list

>>> a = [1, 3, 5, 10, 7, 0, -2]
>>> del a[2]
>>> a
[1, 3, 10, 7, 0, -2]
>>> del a[1:4]
>>> a
[1, 0, -2]
>>> del a[-2:]
>>> a
[1]
>>> a = {'a':1, 'b':2, 'c':3, 'd':4, 'e':5}
>>> del a['b']
>>> a
{'a': 1, 'c': 3, 'e': 5, 'd': 4}
>>> for i in 'ced':
del a[i]

>>> a
{'a': 1}

By the way, in your code
if 2==3:
del(a) # This never happens, as 2==3 is False

Answer 2

what is the 'del' function supposed to do exactly?

Answer 3

you have to declare a 'del' function before it can be used

Answer 4

To delete a line

Answer 5

Understand now :)