Execute Commands Sequentially in Python?

Question

I would like to execute multiple commands in a row:

i.e. (just to illustrate my need):

cmd (the shell)

then

cd dir<

Answer 1

There is an easy way to execute a sequence of commands.

Use the following in subprocess.Popen

"command1; command2; command3"

Or, if you're stuck with windows, you have several choices.

• Create a temporary ".BAT" file, and provide this to subprocess.Popen

• Create a sequence of commands with "\n" separators in a single long string.

Use """s, like this.

"""
command1
command2
command3
"""

Or, if you must do things piecemeal, you have to do something like this.

class Command( object ):
    def __init__( self, text ):
        self.text = text
    def execute( self ):
        self.proc= subprocess.Popen( ... self.text ... )
        self.proc.wait()

class CommandSequence( Command ):
    def __init__( self, *steps ):
        self.steps = steps
    def execute( self ):
        for s in self.steps:
            s.execute()

That will allow you to build a sequence of commands.