User:Praveer-mathur-9f3d@uni-bonn.de/intro-to-programming-with-python

Short Quiz: Variable Assignment

What values do the two variables "mass" and "age" have in the following lines?

mass = 47.5 
 print(mass)

age = 122 
 print(mass, age)

mass = mass * 2.0 
 print(mass, age)

age = age - 20 
 print(mass, age)

Short Quiz: Data Types

planet = 'Earth'
What datatype does the variable planet have?

apples = 5
What datatype does the variable apples have?

distance = 10.5
What datatype does the variable distance have?

false = 7 > 2
What datatype does the variable false have?

Short Quiz: Boolean Operations

var1 = True var2 = False What is the value of each variable after each of the following print statements?

print(var1, var2)

var2 = var1 or var2 
 print(var1, var2)

var1 = var1 and not var2 
 print(var1, var2)

var1 = not(var1 and not var1) 
 print(var1, var2)

Short Quiz: String Concatenation

str1 = "Uni" str2 = "Bonn" str3 = str2 + str1 str4 = str1 * 3

What output do you expect after doing print(str3)?

What output do you expect after doing print(str4)?

Short Quiz: Containers

Read the following code:

uni = {"departments": ["physics", "chemistry"], "employees": 4000, "campuses": ("Poppelsdorf", "Endenich"),}

What do the following lines print? Keep in mind that the lines could also give an error output.

print(uni[0])

print(uni["departments"][0]

print(uni["employees"] = 5000

print(uni["campuses"][0] = "Innenstadt"

print(uni["campuses"][0]

Short Quiz: Understanding if Statements

Which of the following statements would get printed?

if '': 
 print('empty string is true')

if 'word': 
 print('word is true')

if []: 
 print('empty list is true')

if [1, 2, 3]: 
 print('non-empty list is true')

if 0: 
 print('zero is true')

if 1: 
 print('one is true')

Short Quiz: Understanding for Loops

Consider the following Python code:

numbers = [5, 8, -3, 6, 0, -2] 
 summed = 0 
 for num in numbers: 
     if num < 0: 
         continue 
     summed = summed + num 
     print(summed)

What does the output look like after the loop is done running?

Short Quiz: Mutability

Will the following lines work or result in an error?

numbers = [5, 8, -3, 6, 0, -2] 
 numbers[3] = 1

string = "banana" 
 string[0] = "c"

languages = ("python", "C", "Fortran") 
 languages[1] = "C++"

alice = {"first_name": "Alice", "age": 32} 
 alice["age"] = 33

Short Quiz: Understanding Slicing

What will the following statements print?

string = "Uni Bonn" 
 print(string[5])

string = "Uni Bonn" 
 print(string[0:2])

string = "Uni Bonn" 
 print(string[5:])