Dev tools review

Author: s2t2

docs/_quarto.yml

@@ -209,7 +209,8 @@ book:
     - part: "Google Colab In-Depth"
       chapters:
         - notes/dev-tools/google-colab/table-of-contents.qmd
-        - notes/dev-tools/google-colab/filesystem.ipynb
+        #- notes/dev-tools/google-colab/filesystem.ipynb
+        - notes/dev-tools/google-colab/files.qmd
         - notes/dev-tools/google-colab/form-inputs.ipynb
         - notes/dev-tools/google-colab/notebook-secrets.qmd
         - notes/dev-tools/google-colab/advanced-integrations.ipynb
@@ -223,10 +224,12 @@ book:
         - notes/python-modules/datetime.qmd
         #- notes/python-modules/getpass.ipynb
 
-    #- part: "The Programming Environment"
-    #  #href: notes/python-modules/index.qmd
-    #  chapters:
-    #    - notes/python-lang/file-operations.qmd
+    - part: "The Programming Environment"
+      #href: notes/python-modules/index.qmd
+      chapters:
+        - href: notes/python-modules/os.ipynb
+          text: "Accessing the Filesystem with the `os` Module"
+        - notes/python-lang/file-operations.qmd
 
     - part: "Custom Functions In-Depth"
       chapters:
@@ -254,7 +257,7 @@ book:
   #body-footer: "© Copyright 2024, Your Name Here"
 
   page-footer:
-    center: "© Copyright 2024 - 2025, Michael J Rossetti"
+    center: "© Copyright 2025, Michael J Rossetti"
 
 
 #bibliography: references.bib

docs/images/colab-file-download.png

@@ -0,0 +1,32 @@
+# Files in Google Colab
+
+Let's take a few moments to explore the \"Files\" menu in the Google Colab left sidebar.
+
+We see there are some example files in the \"sample_data\" directory.
+
+![Example files in the Colab filesystem](../../../images/colab-filesystem.png){height=350 fig-align="center"}
+
+## Downloading Files
+
+Observe, it is possible to download files like these from the Colab filesystem to your local machine, by right-clicking on them.
+
+
+![Downloading files from the Colab filesystem.](../../../images/colab-file-download.png){height=350 fig-align="center"}
+
+## Uploading Files
+
+And it is possible to upload files from your local machine to the Colab filesystem as well, using  the "Files > Upload to session storage" menu option (i.e. the button with the file upload icon).
+
+![Uploading files to the Colab filesystem.](../../../images/colab-file-upload.png){height=350 fig-align="center"}
+
+## Accessing and Manipulating Files
+
+Once we have the files in the Colab filesystem, we can write Python code to access and manipulate them.
+
+  + One way of interacting with the filesystem in Python is by using the capabilities of [the `os` module](../../python-modules/os.ipynb).
+
+  + For reading and writing text (\".txt\") files, we can leverage the `open` function (see [Text File Operations](../../python-lang/file-operations.qmd)).
+
+  + For reading and writing tabular data (\".csv\") files, we can leverage the `pandas` package (see [Getting Started with Pandas](https://prof-rossetti.github.io/applied-data-science-python-book/notes/pandas/obtaining-dataframes.html)).
+
+Some of these examples might seem a bit complicated at the moment for beginners. For now, the main take-away is understanding there are ways for us to write Python code to interact with the surrounding environment, specifically accessing and manipulating the filesystem.