improve imports

Author: behackl

manim/mobject/graph.py

@@ -4,13 +4,12 @@
     "Graph",
 ]
 
+from ..constants import UP
 from ..utils.color import BLACK
 from .types.vectorized_mobject import VMobject
 from .geometry import Dot, Line, LabeledDot
 from .svg.tex_mobject import MathTex
 
-from manim import UP
-
 from copy import copy
 import networkx as nx
 import numpy as np