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Oppiskele String Slicing | Basic Concepts
String Manipulation in Python
course content

Kurssisisältö

String Manipulation in Python

String Manipulation in Python

1. Basic Concepts
2. String Methods
3. Strings Formatting

book
String Slicing

What if we want to extract multiple symbols at once? Surely, we can extract them one by one, but it's a bit irrational, isn't it? Surely, it is irrational.

To do this, we can use slicing. Slice syntax allows us to extract a range of characters. To extract elements from starting index m to index n we use string[m:n+1]. Yes, note that the last index is not included, therefore if we want to extract the element with index 5 (for example) as the last we need to pass 6 as the next index after :.

We can also extract all the elements from a certain position till the end by leaving out the last index (like s[3:] will extract all the elements starting from index 3). The same logic applies if we leave out the first index - in this case, we will get all the elements to a specific one (like s[:5] will extract all the elements to index 4).

Tehtävä

Swipe to start coding

Given variable course with the string String Manipulation in Python. Your tasks are:

  1. Extract all the elements starting from index 7 to index 18 (including both left and right boundaries).
  2. Extract all the elements starting from the index 20 (including the boundary).

Ratkaisu

Switch to desktopVaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista
Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 1. Luku 4
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book
String Slicing

What if we want to extract multiple symbols at once? Surely, we can extract them one by one, but it's a bit irrational, isn't it? Surely, it is irrational.

To do this, we can use slicing. Slice syntax allows us to extract a range of characters. To extract elements from starting index m to index n we use string[m:n+1]. Yes, note that the last index is not included, therefore if we want to extract the element with index 5 (for example) as the last we need to pass 6 as the next index after :.

We can also extract all the elements from a certain position till the end by leaving out the last index (like s[3:] will extract all the elements starting from index 3). The same logic applies if we leave out the first index - in this case, we will get all the elements to a specific one (like s[:5] will extract all the elements to index 4).

Tehtävä

Swipe to start coding

Given variable course with the string String Manipulation in Python. Your tasks are:

  1. Extract all the elements starting from index 7 to index 18 (including both left and right boundaries).
  2. Extract all the elements starting from the index 20 (including the boundary).

Ratkaisu

Switch to desktopVaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista
Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 1. Luku 4
Switch to desktopVaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista
Pahoittelemme, että jotain meni pieleen. Mitä tapahtui?
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