What's in workdir of code playground ?

Question

to see the created file in code playground :

file = open("newfile.txt", "w")
file.write("This has been written to a file")
file.write(", or am I wrong ?")
file.close()

file = open("newfile.txt", "r")
print(file.read())
file.close()
import os
print(os.listdir())

it prints
[`newfile.txt','source.py']

Answer 1

source.py is the file you are working with. It stores the code you typed in the playground.

Answer 2

Try this:
import os
print(os.listdir())
files=os.listdir()
file=open("source.py", "r")
a=file.read()
print(a)