Conteúdo do Curso
Learn Python from Scratch
Learn Python from Scratch
Strings slicing
You can refer to element(s) in your string. To do that, use indexes inside square brackets and note that indexation in Python starts from 0, so for the string with 5 symbols ("Hello"), the last symbol ("o") will have index 4.
Also, you can get multiple symbols in one action. To do so, separate starting and finishing position plus 1 with : (for example, if you want elements with indexes from 1 to 4, you need to write 1:5, as the right limit is exclusive). At the same time, you can refer to elements in reverse order, i.e., call the very last element as the first in reverse order. Use the minus - sign to do it. If you want to know the total number of symbols in your string, use the len() function. Please note that numeration in reverse order starts from 1 (as there is no minus zero, which makes it logical).
For example:
# create new string string = "This is string in Python" # let's get the first element print(string[0]) # let's get all the elements from index 3 to 8 print(string[3:9]) # let's get the last but one element print(string[-2]) # let's get the number of symbols in this string print(len(string))
Tarefa
Given string "This is string for learning" assigned to variable test_str. You need to:
- Extract the very first and very last symbols.
- Extract word string.
- Get the length of this string.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
Strings slicing
You can refer to element(s) in your string. To do that, use indexes inside square brackets and note that indexation in Python starts from 0, so for the string with 5 symbols ("Hello"), the last symbol ("o") will have index 4.
Also, you can get multiple symbols in one action. To do so, separate starting and finishing position plus 1 with : (for example, if you want elements with indexes from 1 to 4, you need to write 1:5, as the right limit is exclusive). At the same time, you can refer to elements in reverse order, i.e., call the very last element as the first in reverse order. Use the minus - sign to do it. If you want to know the total number of symbols in your string, use the len() function. Please note that numeration in reverse order starts from 1 (as there is no minus zero, which makes it logical).
For example:
# create new string string = "This is string in Python" # let's get the first element print(string[0]) # let's get all the elements from index 3 to 8 print(string[3:9]) # let's get the last but one element print(string[-2]) # let's get the number of symbols in this string print(len(string))
Tarefa
Given string "This is string for learning" assigned to variable test_str. You need to:
- Extract the very first and very last symbols.
- Extract word string.
- Get the length of this string.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
Strings slicing
You can refer to element(s) in your string. To do that, use indexes inside square brackets and note that indexation in Python starts from 0, so for the string with 5 symbols ("Hello"), the last symbol ("o") will have index 4.
Also, you can get multiple symbols in one action. To do so, separate starting and finishing position plus 1 with : (for example, if you want elements with indexes from 1 to 4, you need to write 1:5, as the right limit is exclusive). At the same time, you can refer to elements in reverse order, i.e., call the very last element as the first in reverse order. Use the minus - sign to do it. If you want to know the total number of symbols in your string, use the len() function. Please note that numeration in reverse order starts from 1 (as there is no minus zero, which makes it logical).
For example:
# create new string string = "This is string in Python" # let's get the first element print(string[0]) # let's get all the elements from index 3 to 8 print(string[3:9]) # let's get the last but one element print(string[-2]) # let's get the number of symbols in this string print(len(string))
Tarefa
Given string "This is string for learning" assigned to variable test_str. You need to:
- Extract the very first and very last symbols.
- Extract word string.
- Get the length of this string.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoObrigado pelo seu feedback!
You can refer to element(s) in your string. To do that, use indexes inside square brackets and note that indexation in Python starts from 0, so for the string with 5 symbols ("Hello"), the last symbol ("o") will have index 4.
Also, you can get multiple symbols in one action. To do so, separate starting and finishing position plus 1 with : (for example, if you want elements with indexes from 1 to 4, you need to write 1:5, as the right limit is exclusive). At the same time, you can refer to elements in reverse order, i.e., call the very last element as the first in reverse order. Use the minus - sign to do it. If you want to know the total number of symbols in your string, use the len() function. Please note that numeration in reverse order starts from 1 (as there is no minus zero, which makes it logical).
For example:
# create new string string = "This is string in Python" # let's get the first element print(string[0]) # let's get all the elements from index 3 to 8 print(string[3:9]) # let's get the last but one element print(string[-2]) # let's get the number of symbols in this string print(len(string))
Tarefa
Given string "This is string for learning" assigned to variable test_str. You need to:
- Extract the very first and very last symbols.
- Extract word string.
- Get the length of this string.
Mude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixoMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo