Recap

In the first lesson, we learned that:

• We can print to the console using the print() function.
• Text is written in quotes "", numbers are not.
• We have the following arithmetic operations: + (addition), - (subtraction), * (multiplication), / (division), % (integer remainder).
• Comments are created by inserting # in a line, and everything in that line after this character is ignored by the computer.
• We store information in variables that we will use later in the program.
• We can create, overwrite, and use a variable:

age = 21 # creation
age = 22 # overwrite
print(age) # use (prints 22)

• We can concatenate text using the + sign:

name = "John"
print("My name is " + name + ".") # prints: My name is John.

• To print a number and text together in one print() function, we must convert the number to text using the str() function.

print("I am " + str(48) + " years old.")

Congratulations on completing the first Python lesson! In the next lesson, we will learn how to use conditionals for variable program behavior!