random number generator issue: removing None at the end [closed] - python-3.x

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I created a lottery number generator with Python 3.7. It shows however None at the end of each try. Here's my code.
import random
def lotto_gen():
n = 1
while n < 7:
print(random.randint(1, 45), end='\t')
n += 1
return
for numbers in range(100):
print(lotto_gen())
And the result goes like this:
6 12 42 37 13 44 None
36 31 32 41 4 30 None
20 31 38 42 14 19 None
8 18 29 22 34 29 None
26 34 15 1 20 38 None
10 17 28 35 22 38 None
23 34 42 22 4 43 None
25 16 17 36 17 4 None
44 8 20 1 43 43 None
29 32 9 2 8 5 None
16 44 35 17 42 10 None
5 1 39 28 21 40 None
35 25 12 31 23 21 None
13 25 9 10 41 7 None
12 34 14 36 27 5 None
32 30 12 5 41 14 None
23 30 5 30 7 9 None
38 25 6 17 17 20 None
12 1 13 10 30 32 None
15 1 3 23 28 6 None
1 2 24 33 36 31 None
28 13 42 39 9 39 None
41 44 2 9 41 34 None
25 19 30 26 8 44 None
39 36 44 4 22 7 None
7 44 29 38 1 8 None
37 6 44 6 41 11 None
29 29 23 40 23 36 None
25 39 30 40 40 4 None
28 14 33 4 15 34 None
41 35 7 26 30 24 None
10 34 26 45 12 10 None
32 6 45 16 24 18 None
14 7 8 26 32 4 None
22 43 40 3 20 31 None
6 42 38 11 18 20 None
6 40 5 18 25 29 None
37 19 26 19 45 41 None
39 8 17 19 17 22 None
I want to remove that None bool type. Can someone tell me how can I edit my code?

Answer 1

Rakesh has given the correct answer, but I would like to explain why your code isn't working. The problem seems to be that for a particular iteration, your code is only able to generate 6 random numbers. Take note, that you have initialized n=1, inside the function lotto_gen() and as the condition for executing the while loop is n<7, the code inside lotto_gen() executes only 6 times.
Now the reason why you receive None at the end is because you are trying to print the value returned by lotto_gen, but take note, that the return field inside your code's function is empty, hence None is returned by the function and hence that gets printed.
So for correcting the code you only need to initialize n as n=0, and to remove the appearance of the none, don't call the function inside a print statement, and create a list which contains the 7 values of each iteration and return it. So, you'll need to modify the code in this manner:
import random
def lotto_gen():
n = 0
a=[]
while n < 7:
a.append(random.randint(1, 45))
n += 1
return a
for numbers in range(100):
print(lotto_gen())
You can use this approach too and my code will execute faster as well! :P

Answer 2

This is one approach.
Ex:
import random
def lotto_gen():
return "\t".join(str(random.randint(1, 45)) for _ in range(6))
for numbers in range(100):
print(lotto_gen())