Why is my Python function printing none?

Why is my Python function printing none?

It is because you are having two print statements. The print statement inside function prints your answer however the print which is calling the function ‘fact()’ has nothing to print returned by the function hence it prints ‘None’. Remove the print statement inside the function and add ‘return’ in place of print.

How do you stop none in Python?

Your options are:

1. return something else if the condition is not met.
2. ignore the function if it returns None.

What is none output in Python?

None in Python is used for defining null variables and objects. None is an instance of the NoneType class. This class is a singleton, meaning that there can be only one instance of it. In fact, all the variables assigned to none, point to the same object in Python.

How do you show output in Python?

Python print() function prints the message to the screen or any other standard output device.

1. Syntax: print(value(s), sep= ‘ ‘, end = ‘\n’, file=file, flush=flush)
2. Parameters:
3. Returns: It returns output to the screen.

How do you remove None from a function?

Use filter() to remove None from a list in Python

1. print(list_of_values) [1, 2, None, 3, None]
2. Not_none_values = filter(None. __ne__, list_of_values)
3. list_of_values = list(Not_none_values)
4. print(list_of_values) [1, 2, 3]

How do you return an empty string in Python?

Use “” to create an empty string Assign “” to a variable to initialize an empty string.

Is it good to return None in Python?

8 Answers. There is no such thing as “returning nothing” in Python. Every function returns some value (unless it raises an exception). If no explicit return statement is used, Python treats it as returning None .

Why does my function keep returning None?

If the return statement is not used inside a function, it returns None which represents the absence of a value.

Is none equal to Python?

None is a singleton object of the NoneType class. None is not equal to anything except itself.

How do you check if an object is none in Python?

Use the isinstance() Function to Check if a Variable Is None in Python. The isinstance() function can check whether an object belongs to a certain type or not. We can check if a variable is None by checking with type(None) . It returns a tuple, whose first element is the variable whose value we want to check.

What does print () do in Python?

The Python print() function takes in python data such as ints and strings, and prints those values to standard out. To say that standard out is “text” here means a series of lines, where each line is a series of chars with a ‘\n’ newline char marking the end of each line.

How do you print a slash in Python?

Use the syntax “\\” within the string literal to represent a single backslash.

Why does ‘print fact’ return none in Python?

, I code. When you write ‘print fact()’, you’re asking Python to print the value returned by the function. Since you haven’t explicitly defined a return value, it returns None by default. The None is the return value of the function. The answer is printed because of the instruction inside the function to do so.

Is there a GitHub repo for all of these Python snippets?

Each of these code snippets are extracted from the How to Python series. Naturally, there has been a bit of a push to create a GitHub repo for all of these snippets: As a result, I decided to create a repo for all of theses snippets.

What happens when a line of Python throws an exception?

If there is no such handler, or if the line of code was not in a try block, Python will go up one level of scope: if the line of code which caused the exception was inside a function, that function will exit immediately, and the line which called the function will be treated as if it had thrown the exception.

Is it possible to print on the same line in Python?

Naturally, Python does a great job of making I/O accessible, but there are still challenges. Here are a few! Along a similar line as formatting strings, sometimes you just need to print on the same line in Python. As the command is currently designed, it automatically applies a newline to the end of your string.