return list python

1. How do I return a number from a list in Python?
2. Can you return a list in Python?
3. Does python range return a list?
4. How do you return a list from a function in Python?
5. How do you sum a list in Python?
6. How do I unlist a list in Python?
7. Can you return two things in Python?
8. Do Python functions need a return?
9. Can you return a variable in Python function?
10. Does range return a list in Python 3?
11. Can you use += in python?
12. What does range () return in Python?

How do I return a number from a list in Python?

The most straightforward way to get the number of elements in a list is to use the Python built-in function len() . As the name function suggests, len() returns the length of the list, regardless of the types of elements in it.

Can you return a list in Python?

You can return multiple values from a function in Python. To do so, return a data structure that contains multiple values, like a list containing the number of miles to run each week. Data structures in Python are used to store collections of data, which can be returned from functions.

Does python range return a list?

The range() function is used to generate a sequence of numbers over time. At its simplest, it accepts an integer and returns a range object (a type of iterable). In Python 2, the range() returns a list which is not very efficient to handle large data.

How do you return a list from a function in Python?

Your function is returning a list so you have to assign it to a variable and than try to print it.
...
A couple of other notes:

1. You may want to convert your function to an iterator, using yield.
2. Your function may be leaking the file handle. ...
3. You can use str.

How do you sum a list in Python?

How to compute the sum of a list in python

1. def sum_of_list(l): total = 0. for val in l: total = total + val. return total. ​ my_list = [1,3,5,2,4] ...
2. def sum_of_list(l,n): if n == 0: return l[n]; return l[n] + sum_of_list(l,n-1) ​ my_list = [1,3,5,2,4] ...
3. my_list = [1,3,5,2,4] print "The sum of my_list is", sum(my_list) Run.

How do I unlist a list in Python?

“how to unlist python” Code Answer's

1. List = ["ITEM1", "ITEM2", "ITEM3"]
2. string_version = "". join(List)
3. ​
4. print(string_version)
5. ​

Can you return two things in Python?

In Python, you can return multiple values by simply return them separated by commas. As an example, define a function that returns a string and a number as follows: Just write each value after the return , separated by commas. ... Note that it is actually the comma which makes a tuple, not the parentheses.

Do Python functions need a return?

A Python function will always have a return value. There is no notion of procedure or routine in Python. So, if you don't explicitly use a return value in a return statement, or if you totally omit the return statement, then Python will implicitly return a default value for you.

Can you return a variable in Python function?

Python functions can return multiple variables. These variables can be stored in variables directly. A function is not required to return a variable, it can return zero, one, two or more variables. This is a unique property of Python, other programming languages such as C++ or Java do not support this by default.

Does range return a list in Python 3?

When we convert a range to a list (using the list constructor) the range is evaluated by the constructor and a list object is returned. The nice thing about Python 3 range() is that it uses no more memory for a very large range than it would for a very small one.

Can you use += in python?

+= adds a number to a variable, changing the variable itself in the process (whereas + would not). Similar to this, there are the following that also modifies the variable: -= , subtracts a value from variable, setting the variable to the result. *= , multiplies the variable and a value, making the outcome the variable.

What does range () return in Python?

Python range() Function

The range() function returns a sequence of numbers, starting from 0 by default, and increments by 1 (by default), and stops before a specified number.