Cannot open a file with AppleScript

I got it:

State with the Applescript is in the variable script such as:

 from subprocess import Popen, PIPE
file = 'hey_you.rtxt"
    script =  f'''
    tell application "TextEdit"
        open file "{file}"
    end tell
    '''

Then:

p = Popen(['osascript', '-'], stdin=PIPE, stdout=PIPE, stderr=PIPE, universal_newlines=True)
...stdout, stderr = p.communicate(script)

When I said "this page" I was referring to: https://discussions.apple.com/thread/7761153?login=true

Ok, I can open it with Script Debugger but that's useless because I need to be able to execute the apple script with Python. When I run

tell application "TextEdit"

open file "Macintosh HD:Users:kylefoley:codes:byu_docs:dictionaries:first_name_research:btn_tree_start_r:Jaxson.rtxt"

end tell

On Script Debugger it works. But the Python syntax:

os.system(

... f'''/usr/bin/osascript -e

... 'tell application "TextEdit"

... open file "{file}"

... end tell' ''')

/usr/bin/osascript: option requires an argument -- e

usage: osascript [-l language] [-e script] [-i] [-s {ehso}] [programfile] [argument ...]

sh: line 3: tell application "TextEdit"

open file "Macintosh HD:Users:kylefoley:codes:byu_docs:dictionaries:first_name_research:btn_tree_start_r:Jaxson.rtxt"

end tell: command not found

Also, the following fails:

os.system(

... f'''/usr/bin/osascript -e 'tell application "TextEdit" open file "{file}" end tell' ''')

28:32: syntax error: Expected end of line but found command name. (-2741)

os.system(

... f'''/usr/bin/osascript -e 'tell application "TextEdit" open file "{file}" ' ''')

28:32: syntax error: Expected end of line but found command name. (-2741)

I know Python can use Applescript because the following works:

os.system(
    f'''/usr/bin/osascript -e 'tell app "TextEdit" to save (every window whose name is "{file}")' ''')

I'm getting the same error message.