1#Python, matplotlib
2from matplotlib import pyplot as plt
3
4#Create the regular line graph with plt.plot, then add the marker argument.
5plt.plot(df["col1"], marker='o')
6
7#Example of a few markers:
8 - solid line style
9 -- dashed line style
10 -. dash-dot line style
11 : dotted line style
12 . point marker
13 , pixel marker
14 o circle marker