Control Control statements such as if and while control which portions of code are executed, when they are executed, and how many times. If Statements and Call Expressions Every clause is c...

Iteration The act of repeating things. In programming, we use loops to perform iteration. While Statements Compound statement that contains a condition (header) and a suite of expressions...

Statements Statements are executed by the interpreter to perform an action A Compound Statement is a statement that can span over multiple lines. A Clause is a single header followe...

Multiple Environments Tracing a User-Defined Function Code Behind the Scenes Def Statement A new function is created! The name is bounded to the ...

Overview Operators Multiple Return Values Docstrings Doctests Default Arguments Operators Shorthand notation for calling builtin functions. from operator import add, mul (2+3*4+5...

Forethought Consider >>> -2 -2 >>> print(-2) -2 There is a difference in the two. The print function and the None value Python has rules for automatically displaying values o...

Environment Diagrams Used to keep track what goes on in the python interpreter. Memory that keeps track of bindings between names and values. Expressed in the form of pictures Operates in ...

Defining Functions Assignment -> abstraction (names are associated to values.) Functions give more flexibility as the names are dynamic. They change as the expression re-evaluates....

Elements of Programming A programming language provides many means for how to combine simple ideas to perform complex actions. There are three main considerations: Primitive expressio...

The Instructor Team John Denero (he/him) - denero@berkeley.edu CS 61A Instructor Researches language models and how people use them Office hours 1-3pm Tuesdays in Warren 1...