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).
Swipe to start coding
Given variable course
with the string String Manipulation in Python
. Your tasks are:
- Extract all the elements starting from index 7 to index 18 (including both left and right boundaries).
- Extract all the elements starting from the index 20 (including the boundary).
Lösning
Tack för dina kommentarer!
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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).
Swipe to start coding
Given variable course
with the string String Manipulation in Python
. Your tasks are:
- Extract all the elements starting from index 7 to index 18 (including both left and right boundaries).
- Extract all the elements starting from the index 20 (including the boundary).
Lösning
Tack för dina kommentarer!
single
Awesome!
Completion rate improved to 4.35
String Slicing
Svep för att visa menyn
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).
Swipe to start coding
Given variable course
with the string String Manipulation in Python
. Your tasks are:
- Extract all the elements starting from index 7 to index 18 (including both left and right boundaries).
- Extract all the elements starting from the index 20 (including the boundary).
Lösning
Tack för dina kommentarer!