Changed things based on Dan's feedback, and re-arranged the project a lot to make accessing the data files more consistent. I've also added a setup.py file to make this a project, which also installs the SqlAlchemy and treelib modules.

Author: writeson

python-sqlite-sqlalchemy/README.md

@@ -1,5 +1,20 @@
-# Pythoh / Sqlite /SqlAlchemy article
+# Python / Sqlite /SqlAlchemy article
 
 This repository contains the content and example code 
 for the python/sqlite/sqlaclchemy article I'm writing 
-for Real Python.
+for Real Python.
+
+This project was built using Python 3.8.0
+
+## Installing The Project
+
+From the main folder take the following steps:
+
+* Install a Python virtual environment for this project
+* Activate the virtual environment
+* Install the project:
+
+```shell script
+python -m pip install -e .
+```
+    

python-sqlite-sqlalchemy/build_data/data/temp_data.csv

@@ -7,7 +7,7 @@ by the example programs. There are three build programs:
  * build_temp_data_sqlite.py
  * build_author_book_publisher_sqlite.py
 
- ## Build the Temperature CSV File
+## Build the Temperature CSV File
 
  The build_temp_data_csv.py file builds a CSV data file
  (temp_data.csv) in the data directory
@@ -19,27 +19,27 @@ by the example programs. There are three build programs:
  temperature data, +/- 10 to make the data look variable
  and reasonable.
 
-  ## Build the Temperature Database File
+## Build the Temperature Database File
 
  The build_temp_data_sqlite.py file builds a Sqlite database
  from the previously created temp_data.csv file called 
  temp_data.db in the data directory. 
 
- ## Build the Author / Book / Publisher Database File
+## Build the Author / Book / Publisher Database File
 
  The build_author_book_publisher_sqlite.py file builds
  a database from the data/author_book_publisher.csv file.
  This database contains the tables necessary to describe 
  the data and the relationships between the data necessary
  for the examples.
 
- ## Directory Structure
+## Directory Structure
 
  The directory structure is set up in such a way the
  build programs (as well as the examples) can find the
  data files needed for each one.
 
- # Executing the Programs
+## Executing the Programs
 
   * Activate your Python virtualenv
   * cd into the build/code directory

python-sqlite-sqlalchemy/build_data/data/temp_data.db

@@ -5,12 +5,13 @@
 
 import os
 import csv
+from pkg_resources import resource_filename
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
-from lib.models import Base
-from lib.models import Author
-from lib.models import Book
-from lib.models import Publisher
+from project.modules.models import Base
+from project.modules.models import Author
+from project.modules.models import Book
+from project.modules.models import Publisher
 
 
 def get_author_book_publisher_data(filepath):
@@ -68,12 +69,11 @@ def main():
     print("starting")
 
     # get the author/book/publisher data into a dictionary structure
-    path = os.path.dirname(os.path.abspath(__file__))
-    csv_filepath = os.path.join(path, "../data/author_book_publisher.csv")
+    csv_filepath = resource_filename("project.data", "author_book_publisher.csv")
     author_book_publisher_data = get_author_book_publisher_data(csv_filepath)
 
     # get the filepath to the database file
-    sqlite_filepath = os.path.join(path, "../data/author_book_publisher.db")
+    sqlite_filepath = resource_filename("project.data", "author_book_publisher.db")
 
     # does the database exist?
     if os.path.exists(sqlite_filepath):

…hemy/build_data/data/temperature_data.db …on-sqlite-sqlalchemy/project/__init__.pypython-sqlite-sqlalchemy/build_data/data/temperature_data.db renamed to python-sqlite-sqlalchemy/project/__init__.py python-sqlite-sqlalchemy/build_data/data/temperature_data.db renamed to python-sqlite-sqlalchemy/project/__init__.py

@@ -1,7 +1,7 @@
-import os
 import csv
 import datetime
 from random import randint
+from pkg_resources import resource_filename
 
 
 start_date = datetime.datetime.strptime("2019-01-02", "%Y-%m-%d")
@@ -86,8 +86,8 @@ def offset_temp(temperature):
 
 def main():
     # create the CSV file
-    path = os.path.dirname(os.path.abspath(__file__))
-    csv_filepath = os.path.join(path, "../data/temp_data.csv")
+    csv_filepath = resource_filename("project.data", "temp_data.csv")
+
     with open(csv_filepath, "w") as data_fh:
 
         # create the writer

…ite-sqlalchemy/build_data/code/README.md …-sqlalchemy/project/build_data/README.mdpython-sqlite-sqlalchemy/build_data/code/README.md renamed to python-sqlite-sqlalchemy/project/build_data/README.md python-sqlite-sqlalchemy/build_data/code/README.md renamed to python-sqlite-sqlalchemy/project/build_data/README.md

@@ -4,6 +4,7 @@
 
 import os
 import csv
+from pkg_resources import resource_filename
 from datetime import datetime
 from sqlalchemy import create_engine
 from sqlalchemy import Column, Integer, String, Date, Float
@@ -52,12 +53,11 @@ def main():
     print("starting")
 
     # get the temperature data into a dictionary structure
-    path = os.path.dirname(os.path.abspath(__file__))
-    csv_filepath = os.path.join(path, "../data/temp_data.csv")
+    csv_filepath = resource_filename("project.data", "temp_data.csv")
     temperature_data = get_temperature_data(csv_filepath)
 
     # get the filepath to the database file
-    sqlite_filepath = os.path.join(path, "../data/temp_data.db")
+    sqlite_filepath = resource_filename("project.data", "temp_data.db")
 
     # does the database exist?
     if os.path.exists(sqlite_filepath):