Course Content

Introduction to Python for Data Analysis

1. Introduction to Python 1/2

First Step in Programming Deal with Variables Practice Math Skills Challenge Deal with Percents How to Attract One User?Challenge Learn Numbers Boolean Numbers Challenge Work with Strings Get Familiar with Lists How to Append New Element?

2. Introduction to Python 2/2

If/Else Challenge If/Elif/Else Challenge For Loop While Loop Challenge

3. Explore Dataset

Data Study Operations with the File How to Explore the Data Sorting Data Max, min, mean, median Challenge Group Data Dive Deeper into Grouping Data Group Data 2.0 Introduction to NumPy Pivot Tables Recall Loops .loc Function Deal with Several Conditions Challenge Visualization: First Steps Dive Deeper into Visualization

4. Becoming an Analyst

Data Study Examine Dataset Challenge СAC 1/2 CAC 2/2 Costly Customers Organic Traffic How Much Do We Earn Is Our Project Profitable? ROI 1/2 ROI 2/2 Visualize ROI

While Loop

While loop is another type of loops. It performs the same, but the construction of the loop differs.


              12345678910
            
# Summing all prices
prices = [3, 5, 6, 2, 7, 8]
i = 0
counter = 0

while i < len(prices):
  counter += prices[i]
  i += 1

print(counter)

When we want to stop our loop immediately, we need to use break.


              123456789
            
prices = [1, 2, 3, 4, 5, 6]
i = 0

while i < len(prices):
  if prices[i] == 4:
    break
  else:
    print(prices[i])
  i += 1

We use a special variable (counter in our case) to collect elements of the price list (in our case). If you want to count the sum of the numbers from 1 to 10, you also have to create a variable that collects the sum after each iteration.

For more practice with loops try this course!

Task

Let's count all money from the list until the sum equals the 100!

Set the while loop to work with the money list.
Set the condition if the counter equals 100.
Finish the program if the counter equals 100.
Add the money iterator to the counter.
Increase the i by 1.
Print the counter.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 2. Chapter 6

While Loop

While loop is another type of loops. It performs the same, but the construction of the loop differs.


              12345678910
            
# Summing all prices
prices = [3, 5, 6, 2, 7, 8]
i = 0
counter = 0

while i < len(prices):
  counter += prices[i]
  i += 1

print(counter)

When we want to stop our loop immediately, we need to use break.


              123456789
            
prices = [1, 2, 3, 4, 5, 6]
i = 0

while i < len(prices):
  if prices[i] == 4:
    break
  else:
    print(prices[i])
  i += 1

We use a special variable (counter in our case) to collect elements of the price list (in our case). If you want to count the sum of the numbers from 1 to 10, you also have to create a variable that collects the sum after each iteration.

For more practice with loops try this course!

Task

Let's count all money from the list until the sum equals the 100!

Set the while loop to work with the money list.
Set the condition if the counter equals 100.
Finish the program if the counter equals 100.
Add the money iterator to the counter.
Increase the i by 1.
Print the counter.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 2. Chapter 6

While Loop

While loop is another type of loops. It performs the same, but the construction of the loop differs.


              12345678910
            
# Summing all prices
prices = [3, 5, 6, 2, 7, 8]
i = 0
counter = 0

while i < len(prices):
  counter += prices[i]
  i += 1

print(counter)

When we want to stop our loop immediately, we need to use break.


              123456789
            
prices = [1, 2, 3, 4, 5, 6]
i = 0

while i < len(prices):
  if prices[i] == 4:
    break
  else:
    print(prices[i])
  i += 1

We use a special variable (counter in our case) to collect elements of the price list (in our case). If you want to count the sum of the numbers from 1 to 10, you also have to create a variable that collects the sum after each iteration.

For more practice with loops try this course!

Task

Let's count all money from the list until the sum equals the 100!

Set the while loop to work with the money list.
Set the condition if the counter equals 100.
Finish the program if the counter equals 100.
Add the money iterator to the counter.
Increase the i by 1.
Print the counter.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

While loop is another type of loops. It performs the same, but the construction of the loop differs.


              12345678910
            
# Summing all prices
prices = [3, 5, 6, 2, 7, 8]
i = 0
counter = 0

while i < len(prices):
  counter += prices[i]
  i += 1

print(counter)

When we want to stop our loop immediately, we need to use break.


              123456789
            
prices = [1, 2, 3, 4, 5, 6]
i = 0

while i < len(prices):
  if prices[i] == 4:
    break
  else:
    print(prices[i])
  i += 1

We use a special variable (counter in our case) to collect elements of the price list (in our case). If you want to count the sum of the numbers from 1 to 10, you also have to create a variable that collects the sum after each iteration.

For more practice with loops try this course!

Task

Let's count all money from the list until the sum equals the 100!

Set the while loop to work with the money list.
Set the condition if the counter equals 100.
Finish the program if the counter equals 100.
Add the money iterator to the counter.
Increase the i by 1.
Print the counter.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 2. Chapter 6

Switch to desktop for real-world practiceContinue from where you are using one of the options below