abstract syntax tree - Python : Evaluating string of python code -


i trying create python script generation tool create python files based on actions. example:

action = "usb" # dynamic input script dev_type = "3.0" # dynamic input script  configuration import config if action == "usb":         script = """              #code usb functionality              dev_type = """ + dev_type + """              if dev_type == "2.0"                  command = config.read("usb command 2.0 ")                  proc = subprocess.popen(command,stdout=subprocess.pipe,                                      stderr=subprocess.pipe, shell=false)               elif dev_type == "3.0":                  command = config.read("usb command 3.0 ")                  proc = subprocess.popen(command,stdout=subprocess.pipe,                                      stderr=subprocess.pipe, shell=false)              """  elif action == "lan":      script = """                #code run lan functionality eg:                command = config.read("lan command")                proc = subprocess.popen(command,stdout=subprocess.pipe,                        stderr=subprocess.pipe, shell=false)                """ open("outputfile.py", w) fl:     fl.writelines(script)

the actual script generator complex. generate "outputfile.py" script in local machine inputting action script , deploy script generated remote machines record results. part of larger framework , need keep execution format.

each "script" block uses config.read function read variables required run config file. "command" in above example.

my actual frame work has 800 configurations in config file - deploy on remote machines along script run. there lot of configurations in file may not required particular script run , not user friendly.

what looking based on "script" block written output file - create custom config file contains config required script run.

for example if action "lan", below script block written output file

script = """          #code run lan functionality eg:          command = config.read("lan command")          proc = subprocess.popen(command,stdout=subprocess.pipe,                 stderr=subprocess.pipe, shell=false)          """

what want "lan command" in custom config file.

my question : how evaluate "script" block (inside triple quotes) know config been used in code , write config custom config file when write output file ?

there multiple if conditions inside "script" block also. not want config "usb command 2.0" , "usb command 3.0" in custom config file if action = "usb" , dev_type = "3.0"

of course cannot execute code inside "script" block - , intercept config.read() function write config got called custom config file. there better way ?


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