#!/usr/bin/python

# Purpose: To learn how to use modules by following

# "A Byte of Python" by Swaroop C H. available on

# https://python.swaroopch.com/

# --------------------------------------------------------

# Sangeeta Biswas

# Post-Doc Researcher

# Brno University of Technology, Czech Republic

# 30.6.2018

# --------------------------------------------------------

import sys # Built-in Module

import os # Built-in Module

import MyModule as mm # User-defined module. When

# module has a long name, we

# can give short name for our

# convenience.

__version__ = 'v1.1'

# The following two print() statements will

# print the same information

print('Name of this module: {}'.format(__name__))

# It is better to use module's name with its objects

# in order to avoid confusion with objects of other

# modules having the same name.

print('Version of this program: {}'.format(__version__))

print('Version of MyModule: {}'.format(mm.__version__))

print('Version of sys module: {}'.format(sys.version))

# We can get Program's name via sys module as we get

# from CLI in C. But we cannot get argc.

print('Name of this program: {}'.format(sys.argv[0]))

print('No. of CLI arguments: {}'.format(len(sys.argv)))

# Module 'os' has interesting usage specially when

# we need to deal with multiple files with different

# naming styles.

# os.walk() returns dirPath, subdirs and filenames.

dirName = '/home/sangeeta/Programming/TensorFlow/ADCIS/exudates'

for dirPath, subDir, imgFileList in os.walk(dirName):

print(dirPath)

print(subDir)

for imgFileName in imgFileList:

print(imgFileName)

# Usage of user-defined module

# (i.e., my module named MyModule)

print('a + b: {}'.format(mm.add()))

print('a - b: {}'.format(mm.sub()))

print('a * b: {}'.format(mm.mul()))

print('a / b: {}'.format(mm.div()))