[Python] Why is python saying "No module named 'manim'" but the manim command works fine?

I'm trying to learn manim and in vscode, whenever I try running a program in vscode with manim sideview, or the program in a terminal with python3 filename.py it always says No module named 'manim'. Also, just in case this helps, I am on arch linux.

I'm just gonna use this example program here to show what I've tried:

from manim import *

class TestBelow(Scene):
def construct(self):
c = Circle()
c.set_fill(BLUE, opacity=0.8)
t = text("Circle").next_to(c, DOWN)

self.play(Write(c), Write(t))
self.wait(2)


Now, when running manim -pqh filename.py TestBelow it works fine, but when running that with actual python, it always says No module named manim.

Continue reading...