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:


              12345678910
            
# 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))

Taak

Swipe to start coding

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.

Oplossing

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Was alles duidelijk?

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Sectie 3. Hoofdstuk 5

Strings slicing

For example:


              12345678910
            
# 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))

Taak

Swipe to start coding

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.

Oplossing

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties

Was alles duidelijk?

Bedankt voor je feedback!

Sectie 3. Hoofdstuk 5

Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande opties