Execution Program for the Runner Scripts to execute python scripts by parsing directories through a single python file.

main.py

#!/usr/bin/python
###########################################################################
### @file main.py
### Execution Engine for the Site Generator
### @Author Abhijit Bose <info@adharlabs.in>
### @License
###  Copyright 2014 Abhijit Bose <info@adharlabs.in>
### Licensed under the Apache License, Version 2.0 (the "License");
### you may not use this file except in compliance with the License.
### You may obtain a copy of the License at
###
###    http://www.apache.org/licenses/LICENSE-2.0
###
### Unless required by applicable law or agreed to in writing, software
### distributed under the License is distributed on an "AS IS" BASIS,
### WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
### See the License for the specific language governing permissions and
### limitations under the License.
###########################################################################
### History
### @version v0.1 First Implementation of the Runner for scripts
###########################################################################
### Imports
###########################################################################
import os,sys,importlib
from os import path
###########################################################################
### Globals
###########################################################################

###########################################################################
### Functions
###########################################################################

#####

def RunScript(sPath,sFile,bDirect=2):
    ''' Run a Python Script via differenct Methods
    @param sPath Sting containing Only the
                 Absolute Path of the File to Execute
    @param sFile String containing Only the File Name to Execute
    @param bDirect Flag indicates how to run the Script
                    0 = Run using Exec Technique
                    1 = Run directly in Shell
                    2 = Import Module and call run() function
    @exception In case of any error both in the script or the execution, it
                 shall be reported
    @return None
    '''
    try:
        if bDirect == 0:
            sRunPath = sPath
            with open(path.join(sPath,sFile)) as f:
                exec(compile(f.read(), "temp.p", 'exec'), globals())
        elif bDirect == 1:
            tmp = os.getcwd()
            os.chdir(sPath)
            os.system("python " + sFile)
            os.chdir(tmp)
        elif bDirect == 2:
            sys.path.insert(0,sPath)
            tmp = importlib.import_module(sFile.split(".py")[0])
            tmp.run()
            sys.path.remove(sPath)
        else:
            pass
    except BaseException as p:
        print("\nProblem in Running",sFile,"at",sPath,"Script :",p)

#####

def Runner(sRootPath):
    ''' Runs all the scripts in lower directories
    @param sRootPath Specifies the Path from which Script Running should start
    @return None
    '''
    try:
        for root, dirs, files in os.walk(sRootPath):
            #bypass dir with _ and __ , Process only if some files  
            if (root.endswith('_') == False) and (len(files) > 0 ) and \
            (root != sRootPath) and (root.find("__")==-1):
                print("-" * 20)
                print(" Root: ",root)
                print("-" * 20)
                for name in files:
                    #check for scripts but avoid packages
                    if name.endswith(".py") and (root.find("__")==-1):
                        print(" Running Script : ",name)
                        RunScript(root,name)
                        print()
    except Exception as p:
        print("\nProblem in Runner :",p)                            

#####

###########################################################################
### Main Program
###########################################################################
        
#####
## Run through the Path
if __name__ == "__main__":
    print(slIntro)
    Runner(path.dirname(__file__))