Contenido del Curso

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

for loop (1/5)

Often we don't need to iterate until something happens - we want to iterate over some set of elements, or something like that.

To construct loop iterating over elements use for loop:


              12
            
for var in smth_iterable:
  do_smth

Common practice is using range() as an iterable object we will use in the loop.
range(n) function with 1 positive argument generates a numbers from 0 to n (exclusive, i.e. to n-1).
range(m,n) function generates number from m to n exclusive in case if both are positive and m < n.

For example, we can rewrite the example from section 5.1 using for loop (in that exercise we printed numbers from 1 to 9)


              123
            
# using for loop to print numbers from 1 to 9
for i in range(1,10):
  print(i)

Please note, that unlike while loop, variable i inside for loop shouldn't be defined before. It's like a dummy variable.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

Sección 6. Capítulo 3

for loop (1/5)

Often we don't need to iterate until something happens - we want to iterate over some set of elements, or something like that.

To construct loop iterating over elements use for loop:


              12
            
for var in smth_iterable:
  do_smth

For example, we can rewrite the example from section 5.1 using for loop (in that exercise we printed numbers from 1 to 9)


              123
            
# using for loop to print numbers from 1 to 9
for i in range(1,10):
  print(i)

Please note, that unlike while loop, variable i inside for loop shouldn't be defined before. It's like a dummy variable.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

Sección 6. Capítulo 3

for loop (1/5)

Often we don't need to iterate until something happens - we want to iterate over some set of elements, or something like that.

To construct loop iterating over elements use for loop:


              12
            
for var in smth_iterable:
  do_smth

For example, we can rewrite the example from section 5.1 using for loop (in that exercise we printed numbers from 1 to 9)


              123
            
# using for loop to print numbers from 1 to 9
for i in range(1,10):
  print(i)

Please note, that unlike while loop, variable i inside for loop shouldn't be defined before. It's like a dummy variable.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

Often we don't need to iterate until something happens - we want to iterate over some set of elements, or something like that.

To construct loop iterating over elements use for loop:


              12
            
for var in smth_iterable:
  do_smth

For example, we can rewrite the example from section 5.1 using for loop (in that exercise we printed numbers from 1 to 9)


              123
            
# using for loop to print numbers from 1 to 9
for i in range(1,10):
  print(i)

Please note, that unlike while loop, variable i inside for loop shouldn't be defined before. It's like a dummy variable.

Tarea

Using for loop print all the numbers from 10 to 20 squared.

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

Sección 6. Capítulo 3

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones