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https://github.com/benedictpaten/intro_python

Lecture Notes and Slides for UCSC CSE20, formatted as Jupyter Notebooks.
https://github.com/benedictpaten/intro_python

jupyter-notebook python3

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Lecture Notes and Slides for UCSC CSE20, formatted as Jupyter Notebooks.

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README 

        
# These are lecture notes for the [UCSC CSE20: Beginning Programming in Python](https://courses.soe.ucsc.edu/courses/cse20) course



Each lecture is composed of a [Jupyter](https://jupyter.org/) notebook.



The lecture syllabus is here: https://bit.ly/intro_python_00



## You can view each of these notebooks using [Google Colab](https://colab.research.google.com/).

  

[Google Colab](https://colab.research.google.com/) provides a notebook environment

you can run from your web browser without installing any software.



Step 1: open [Google Colab](https://colab.research.google.com/).



Step 2: paste https://github.com/benedictpaten/intro_python into the

Github URL search box under the Github tab (hit return).



Step 3: pick the notebook for the lecture you want.



For an introduction to using Google Colab (and Juptyer Notebooks in general) 

see the following [tutorial](https://colab.research.google.com/notebooks/intro.ipynb).



## To install and use these notebooks on your computer with [Jupyter](https://jupyter.org/)



If you prefer to have these notebooks installed on your computer and to use Jupyter to edit them

follow the following instructions. Note, these instructions use the classic Jupyter notebook environment. You

may prefer to install the more powerful [JupyterLab](https://jupyter.org/install), which provides a more 

full-fledged IDE for editing. However, for simplicity, I like the former.



**These instructions should work on

Linux or Mac OS and require you to be familiar with using unix shell commands (e.g. with a terminal app).

It is not necessary to install these notebooks on your computer to take this course.**



First, make sure you have [python3](https://www.python.org/) installed on your computer.



Next make a directory to hold the notebooks:



```

mkdir cse20 && cd cse20

```



To avoid problems with conflicting versions of dependencies on your system, we strongly recommend installing 

these notebooks inside a Python 3 [virtual environment](https://virtualenv.pypa.io/en/stable/). 

To install the `virtualenv` command, if you don't have it already, run:



```

python3 -m pip install virtualenv

```



To set up a virtual environment in the directory `python_intro_env`, run:

```

python3 -m virtualenv -p python3.11 python_intro_env

```

Note that here I am using Python 3.11, but you may wish to choose a different version, which you can change by 

specifying a different number string, i.e. python3.9



Then, to enter the virtualenv, run:

```

source python_intro_env/bin/activate

```



You can always exit the virtualenv by running `deactivate`.



To install these notebooks in Python, clone the repo:  

```

git clone https://github.com/benedictpaten/intro_python.git

cd intro_python

```



Now install Jupyter and some Python packages we'll use:



```

pip install notebook

pip install RISE

pip install numpy

pip install pandas

pip install matplotlib

pip install scikit-learn

```



Now make this virtual environment accessible to Jupyter:



```

ipython kernel install --user --name=intro_python_env

```



Now you're ready to run the notebooks:



```

jupyter notebook

```



A browser should then open showing you the running Juptyer notebook launch page. Simply

navigate to the desired notebook and select it to open. To use the virtual environment

click on the Kernel menu and then click "Change kernel" and selecting the "intro_python_env"

option. That's it, you should be set use all the features of these notebooks.



Later, after following the above steps, if you want to start the notebook server again (e.g. after

shutting down the computer) simply navigate to the cse20 directory in the terminal and then 

execute the following two commands:



```

source python_intro_env/bin/activate

jupyter notebook

```



When you're finished with these notebooks you

just need to delete the parent directory (cse20) and

everything we've installed (including all the notebooks, Jupyter and Python packages, 

but not including Python3) will be removed.



```

rm -rf cse20

```



### Building html versions of the notebooks as slides



If you've followed the above instructions to download and run the notebooks on your computer

you can build html formatted versions of the slides by running the make_slides.sh script in the 

intro_python subdirectory:



```

./make_slides.sh

```



However, you may prefer to use [RISE](https://rise.readthedocs.io/en/stable/) to view

the slides (it is installed with the above instructions). RISE allows

you to interactively edit and run the notebook and toggle back and forth into

a slide viewer.



# Practice Exams



For CSE20 we are moving to all paper exams to prevent the use of code assistant tools (chatGPT etc.). 

In the exams folder you can find a couple of practice Jupyter notebook format exams to test your knowledge. These were

used previously in the course.