Python Basics at PyCAR2020

Strings

Create a string and assign it to a variable

Print your string. The print() command was optional in Python 2.x, but is now required in Python 3.x.

Get the type of an object.

Make a comment to yourself and then get the length of your string.

Remember that a string is just a series of characters, not a word or a sentence So you can "slice" off pieces of a string based on the index of the characters in it. Try to slice off the last 5 characters in my_string

Convert it to lowercase.

Convert it to uppercase.

Convert it to titlecase.

Concatenate strings.

Split strings.

Join a list of strings

Remove a character.

Strip whitespace.

Removes only leading whitespace characters.

Removes only trailing whitespace characters.

I need help remembering what methods my variable has available.

I need help on a specific method.

Integers

Create an integer.

Print your integer.

Get the type of your integer.

Do some addition.

Do some subtraction.

Do some multiplication.

Do some division.

Floats

Create a float, assign it a value and print it.

Divide a float in half.

Divide an integer in half. If you're used to Python 2.X, this will behave a little bit differently.

Lists

Create a list.

Create a list, you can use strings, integers, variables, etc

Print the list.

Print its type.

Print its length.

Create a list of numbers.

Print the first item in the list.

Print the last item in the list.

Print all items from 4 through the end. We call this slicing.

Print the items from the start to the penultimate position.

Print the middle 4 items.

Add an item to the list and see if it was added.

Delete the last item in the list.

Set the last value in the list to a variable

Dictionaries

Create an empty dictionary

Add a key called "class_size", whose value is my_product

Add a dictionary key called "nerds" and a value of "at bar".

Call the value of a dictionary for the key "nerds".

Conditionals & Comparisons

Take your list or make a new one, loop through it printing out each value

Create two variables, assign values and compare them

Create two variables, assign one as a number and one as a string, and compare them

If x is greater than y, print my_list. Otherwise, print my_dict.

This barely skims the surface of what you can do in Python, but hopefully this overview will make you comfortable enough to get started.

Now, exit the program.