Lists (2/3)
There are several operations available for manipulating lists, same as for string, such as:
len()- length of list (i.e. number of elements);list1 + list2- concatenation (both must be lists);list1 * n- n copies of list1;list.append(x)- add x (one element!) to the end of list (x can not be list) - this one rewrites your list;list.extend((x, y, ...))- add x,y, ... to the end of list - also rewrites your list;list.copy()- creates a copy of your list;list.count(x)- counts number of x in list.
For example, we can modify a bit our list with several more countries.
12345678910countries = ["USA", 9629091, "Canada", 9984670, "Germany", 357114] # list with new countries countries_new = ["Brazil", 8515767, "India", 3166391] # add new data (list) to our list using concatenation print(countries + countries_new) # using list method countries.extend(("Brazil", 8515767, "India", 3166391)) print(countries)
Swipe to start coding
Modify your last list with new data. Experiment with both methods and print the result.
| Name | Age |
|---|---|
| John | 41 |
| Michelle | 35 |
Solution
Merci pour vos commentaires !
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There are several operations available for manipulating lists, same as for string, such as:
len()- length of list (i.e. number of elements);list1 + list2- concatenation (both must be lists);list1 * n- n copies of list1;list.append(x)- add x (one element!) to the end of list (x can not be list) - this one rewrites your list;list.extend((x, y, ...))- add x,y, ... to the end of list - also rewrites your list;list.copy()- creates a copy of your list;list.count(x)- counts number of x in list.
For example, we can modify a bit our list with several more countries.
12345678910countries = ["USA", 9629091, "Canada", 9984670, "Germany", 357114] # list with new countries countries_new = ["Brazil", 8515767, "India", 3166391] # add new data (list) to our list using concatenation print(countries + countries_new) # using list method countries.extend(("Brazil", 8515767, "India", 3166391)) print(countries)
Swipe to start coding
Modify your last list with new data. Experiment with both methods and print the result.
| Name | Age |
|---|---|
| John | 41 |
| Michelle | 35 |
Solution
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
single
