Plotting single data point using seaborn

Question

I am using seaborn to create a boxplot. But how would I add a line or a single point to show a single data value on the chart. For instance how would i go about plotting the value 3.5 on the below chart.

import seaborn as sns
import matplotlib.pyplot as plt

df1 = [2.5, 2.5, 2, 3, 4, 3.5]
sns.set_style("whitegrid")
fig, ax = plt.subplots(figsize=(8,8))
plot1 = sns.boxplot(ax=ax, x=df1, linewidth=5)

Answer 1

You can achieve the same effect using plt.scatter. Personal preference, as the syntax is shorter and more succinct:

df1 = [2.5, 2.5, 2, 3, 4, 3.5]
sns.set_style("whitegrid")
fig, ax = plt.subplots(figsize=(8,8))
plot1 = sns.boxplot(ax=ax, x=df1, linewidth=5)

plt.scatter(3.5, 0, marker='o', s=100)