Session 1: Welcome to Python!

Objective:

• The objective of this session is to teach you how to login to the lab computers, as well as how to navigate the terminal using simple Unix commands. You will also learn how to use PyCharm.

Lesson Plan:

• Login to the lab computers.
• Introduction to Unix terminal.
• Introduction to Unix commands.
• Introduction to PyCharm.
• Complete First Program in PyCharm.

Commonly used Unix commands:

Command	Action	Example
ls	Lists the contents of your current directory. A directory is similar to a file cabinet, it holds both folders and files.	ls or ll
cd	Changes your directory.	cd Documents
mkdir	Makes a directory.	mkdir CS_Notes
pwd	Prints your current directory	pwd
man	Allows you to read the manual page for different commands.	man cd
cp	Copies a file and gives it the name of your choosing. Must use -r when copying directories.	cp original.py copy.py
mv	Moves files.	mv filename.doc Documents
rm	**Careful! This command deletes the file of your choosing. Once you use this command, the file is gone! There are no warnings.	rm file_name.doc
less	Shows what is inside of a file. Press q to quit.	less myfile.py




File to Download:

Please do not download until told to do so

• bashrcpython



Tips for using the Terminal:

• When you launch programs, add an & to the end and then execute the command. This allows you to use the terminal while the program is running. Ex:
  gedit filename.txt &
• Spaces in file names are replaced with a backslash (\). Ex:
  File Name.doc becomes: File\Name.doc
• Grave (~) represents the home directory. Example:
  cd ~
  returns you to the home directory
• One dot . represents the current directory and .. is the parent directory. Example: cd .. moves you to the parent directory.

Change your account password:

• Open the terminal and type in the command: passwd
• Follow the instructions in the terminal. Note: Letters won't appear as you type your password.



Accessing PyCharm:

• In xfce, right click on the desktop background.
• Click “Create Launcher”
• Name: Pycharm
• Command: /usr/local/pycharm-community-2016.1.4/bin/pycharm.sh (You can copy and paste this)
• Click “Create”
• Click on “Pycharm” in your desktop, and when prompted, click “Launch Anyway”
• When prompted with a password, click cancel (may have to click cancel multiple times)
• When prompted with "JetBrains Private Policy" screen, click accept
• When prompted with "Complete Installation", press OK
• Give it a few moments!
• If the “Tip of the Day” window pops up, just click “Close”
• Follow your instructors directions past this point!

Creating a new Python Project:

• Navigate to File -> New Project
• Select interpreter 3.8
• Select "Open in current window and "Add to currently opened projects"
• Press OK
• In the upper left corner, right click your new project
• Rename your project with Refactor -> Rename
• Add a new python file with New -> Python file
• To run your program, go to Run -> Run (Choose either option presented) and select your file




Congratulations! Session 1 is complete. Click here to return to the schedule.