🔒 Opening and reading a file

[remote maple]

Im trying to create a system in which the user will inout a password and username and this will be written in another file and will be saved for future user so that the user can sign in. How do i write a file and then use the file to check for previous username and passwords?

[upper owl]

@remote maple

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[austere ravine]

You can use open to open a file

[summer belfry]

do u know how to open a file in python ?

[remote maple]

No

[austere ravine]

Look at the open function

[summer belfry]

welp can u do the user will input password and username bit and just print them out after they done inputting ?

[remote maple]

Yes but i want them to be able to sign in and not need to register everytime

[summer belfry]

so lets get to knowing how to do filework

first off, we need to open a file to work with it

we do this using open

[remote maple]

How do open the file

Everytime i press open it just copys it to clipboard

[summer belfry]

wdym press open

its just a function u use in code

open()

[remote maple]

Ohhh

[austere ravine]

open is a function, like print

[remote maple]

If you cant tell im not the best with coding

[summer belfry]

every1 starts somewhere

[remote maple]

Ive used the open function now how do i write in it?

Wait nvm it says the file name is not defined

[summer belfry]

file = open()

# do file operations here

file.close()

this the basic of the basic

[steel radish]

looking at the docs would be a good start

[austere ravine]

when you use open, you need specify the file name and the mode : 'r' for reading and 'w' for writing

[summer belfry]

those the 2 important arguments ye

[steel radish]

and it'd be good to learn to use the with statement right from the get-go

with open(...) as fp: ...

[austere ravine]

open returns a file object, which has the methods write and read (depending on the mode)

[steel radish]

this ensures that the file gets closed if there's an exception in the block

[indigo birch]

but you don't really need the second argument when you're just opening a file for reading since that is the default

[remote maple]

Okay thank you

[upper owl]

Python help channel closed for inactivity

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