Fix prose typos in functions and OOP lectures

lectures/functions.md

@@ -25,7 +25,7 @@ kernelspec:
 
 ## Overview
 
-Functions are an extremely useful construct provided by almost all programming.
+Functions are an extremely useful construct provided by almost all programming languages.
 
 We have already met several functions, such as
 
@@ -35,7 +35,7 @@ We have already met several functions, such as
 In this lecture we'll 
 
 1. treat functions systematically and cover syntax and use-cases, and
-2. learn to do is build our own user-defined functions.
+2. learn how to build our own user-defined functions.
 
 We will use the following imports.
 
@@ -360,7 +360,7 @@ Notes
 
 Now, there are several ways that we can simplify the code above.
 
-For example, we can get rid of the conditionals all together by just passing the desired generator type as a function, method, or other [callable](https://typing.python.org/en/latest/spec/callables.html) object.
+For example, we can get rid of the conditionals altogether by just passing the desired generator type as a function, method, or other [callable](https://typing.python.org/en/latest/spec/callables.html) object.
 
 To understand this, consider the following version.
 
@@ -669,8 +669,7 @@ print([x(i) for i in range(10)])
 :label: func_ex5
 ```
 
-Rewrite the function `factorial()` in from [Exercise 1](factorial_exercise) using recursion.
-
+Rewrite the function `factorial()` from [Exercise 1](factorial_exercise) using recursion.
 ```{exercise-end}
 ```
 

lectures/oop_intro.md

@@ -192,7 +192,7 @@ When Python creates this integer object, it stores with it various auxiliary inf
 
 Any name following a dot is called an *attribute* of the object to the left of the dot.
 
-* e.g.,``imag`` and `__class__` are attributes of `x`.
+* e.g., `imag` and `__class__` are attributes of `x`.
 
 We see from this example that objects have attributes that contain auxiliary information.
 
@@ -299,7 +299,7 @@ The answer is related to the fact that Python aims for readability and consisten
 In Python, it is common for users to build custom objects --- we discuss how to
 do this {doc}`later <python_oop>`.
 
-It's quite common for users to add methods to their that measure the length of
+It's quite common for users to add methods to their objects that measure the length of
 the object, suitably defined.
 
 When naming such a method, natural choices are `len()` and `length()`.
@@ -343,7 +343,7 @@ This includes not just lists, strings, etc., but also less obvious things, such
 * files opened for reading or writing
 * integers, etc.
 
-Remember that everything is an object will help you interact with your programs
+Remembering that everything is an object will help you interact with your programs
 and write clear Pythonic code.
 
 ## Exercises

lectures/python_oop.md

@@ -155,7 +155,7 @@ Before we do so, in order to indicate some of the power of Classes, we'll define
 
 ```{code-cell} python3
 def earn(w,y):
-    "Consumer with inital wealth w earns y"
+    "Consumer with initial wealth w earns y"
     return w+y
 
 def spend(w,x):
@@ -186,7 +186,7 @@ print("w0,w1,w2,w3,w4 = ", w0,w1,w2,w3,w4)
 
 A *Class* bundles a set of data tied to a particular *instance* together with a collection of functions that operate on the data.
 
-In our example, an *instance* will be the name of  particular *person* whose *instance data* consist solely of its wealth.
+In our example, an *instance* will be the name of a particular *person* whose *instance data* consist solely of its wealth.
 
 (In other examples *instance data* will consist of a vector of data.)
 
@@ -206,7 +206,7 @@ We'll build a `Consumer` class with
 
 Admittedly a little contrived, this example of a class helps us internalize some peculiar syntax.
 
-Here how we set up our Consumer class.
+Here's how we set up our Consumer class.
 
 ```{code-cell} python3
 class Consumer:
@@ -223,7 +223,7 @@ class Consumer:
         "The consumer spends x dollars if feasible"
         new_wealth = self.wealth - x
         if new_wealth < 0:
-            print("Insufficent funds")
+            print("Insufficient funds")
         else:
             self.wealth = new_wealth
 ```