z = 1

print(z)
z = z + 1

9

def sillystring():
    return """
    Hello world!
    """

print(sillystring())
help(sillystring)

    Hello world!
    
Help on function sillystring in module __main__:

sillystring()

import math

def hypotenuse(a, b):
    """
    Return the hypotenuse of a right triangle with side lengths a and b.
    """
    return math.sqrt(a**2 + b**2)

print(hypotenuse(3, 4))
print(3+2)

5.0
5

print(float(42))
print(int(41.999))
print(round(41.999))
print(round(41.5))

42.0
41
42
42

import math

def hypotenuse(a: float, b: float) -> str:
    """
    Return the hypotenuse of a right triangle with side lengths a and b.
    """
    return math.sqrt(a**2 + b**2)

hypotenuse(3, 4)

<cell>7: error: Incompatible return value type (got "float", expected "str")  [return-value]

5.0

!wget https://student.cs.uwaterloo.ca/~cs114/src/Assignment-00.ipynb

--2026-01-13 15:05:38--  https://student.cs.uwaterloo.ca/~cs114/src/Assignment-00.ipynb
Resolving student.cs.uwaterloo.ca (student.cs.uwaterloo.ca)... 129.97.167.168
Connecting to student.cs.uwaterloo.ca (student.cs.uwaterloo.ca)|129.97.167.168|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5968 (5.8K)
Saving to: ‘Assignment-00.ipynb’

Assignment-00.ipynb 100%[===================>]   5.83K  --.-KB/s    in 0s      

2026-01-13 15:05:38 (4.48 GB/s) - ‘Assignment-00.ipynb’ saved [5968/5968]

print(42)/(7)
print("Hello")

<cell>1: error: Unsupported operand types for / ("None" and "int")  [operator]

42

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Input In [5], in <cell line: 1>()
----> 1 print(42)/(7)
      2 print("Hello")

TypeError: unsupported operand type(s) for /: 'NoneType' and 'int'

print(42/7
def hello():
    print("World")

  Input In [7]
    print(42/7
         ^
SyntaxError: '(' was never closed

print(42/7

  Input In [8]
    print(42/7
              ^
SyntaxError: incomplete input

def return():
    return 42

  Input In [9]
    def return():
        ^
SyntaxError: invalid syntax

def curious():
    return sqrt(9)
curious()

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Input In [13], in <cell line: 3>()
      1 def curious():
      2     return sqrt(9)
----> 3 curious()

Input In [13], in curious()
      1 def curious():
----> 2     return sqrt(9)

NameError: name 'sqrt' is not defined

def weird(x):
    x = x * 5
  return x

  File <tokenize>:3
    return x
    ^
IndentationError: unindent does not match any outer indentation level

assert 1 == 0, "Math is broken"

---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
Input In [17], in <cell line: 1>()
----> 1 assert 1 == 0, "Math is broken"

AssertionError: Math is broken

print(0.3-0.2)
assert 0.3-0.2 == 0.1, "Math too simple to fail"

0.09999999999999998

---------------------------------------------------------------------------
AssertionError                            Traceback (most recent call last)
Input In [19], in <cell line: 2>()
      1 print(0.3-0.2)
----> 2 assert 0.3-0.2 == 0.1, "Math too simple to fail"

AssertionError: Math too simple to fail