Course Content

Learn Python from Scratch

1. The basics

Hello, World!Hello, me!Variables Comments Indentation Numbers and strings

2. Arithmetic operations

Addition Multiplication and power Division and whole part division

3. Common data types

Data types Numbers float and int Storing text Strings slicing Concatenation

4. Conditional statements

Boolean data type Combining conditions Simple if/else expressions (1/2)Simple if/else expressions (2/2)If/else expressions with multiple conditions (1/2)If/else expressions with multiple conditions (2/2)

5. Other data types

Lists (1/3)Lists (2/3)Lists (3/3)Tuples (1/3)Tuples (2/3)Tuples (3/3)Dictionaries (1/2)Dictionaries (2/2)

6. Loops

while loop (1/2)while loop (2/2)for loop (1/5)for loop (2/5)for loop (3/5)for loop (4/5)for loop (5/5)

7. Functions

Built-in functions Writing your own functions (1/5)Writing your own functions (2/5)Writing your own functions (3/5)Writing your own functions (4/5)Writing your own functions (5/5)lambda functions

Storing text

You've already met with strings in the very first exercises. String - is simply a text which can contain letters, symbols, numbers, and so on. The one requirement - is to put your text inside quotes 'text' or "text" or '''text'''. The number of quotes on the left side must be equal to the number of quotes on the right side.

To convert a variable into a string use the str function or place your text inside quotes. It's useful if you, for example, need to make Python understand that 3 is string, not number (by default, Python will assign 3 as int).

For example, let's create a string with only the number 23


              123456789
            
# first way to create string
string1 = '23'
print(type(string1))
# second way to create string
string2 = 23
print(type(string2))
# convert it into string type
string2 = str(string2)
print(type(string2))

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

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

Everything was clear?

Section 3. Chapter 4

Storing text

For example, let's create a string with only the number 23


              123456789
            
# first way to create string
string1 = '23'
print(type(string1))
# second way to create string
string2 = 23
print(type(string2))
# convert it into string type
string2 = str(string2)
print(type(string2))

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

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

Everything was clear?

Section 3. Chapter 4

Storing text

For example, let's create a string with only the number 23


              123456789
            
# first way to create string
string1 = '23'
print(type(string1))
# second way to create string
string2 = 23
print(type(string2))
# convert it into string type
string2 = str(string2)
print(type(string2))

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

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

Everything was clear?

For example, let's create a string with only the number 23


              123456789
            
# first way to create string
string1 = '23'
print(type(string1))
# second way to create string
string2 = 23
print(type(string2))
# convert it into string type
string2 = str(string2)
print(type(string2))

Task

Given a math expression assigned to variables expr1 and expr2. Not changing expr1, convert expr2 by using quotes, and print its value.

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

Section 3. Chapter 4

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