[Python] Matplotlib cannot be shown

I want to visualize pandas.DataFrame using matplotlib on linux. My code is:

import pandas as pd
import matplotlib.pyplot as plt

sep = "\n\n\n"

df = pd.read_csv("dataset.csv")
print("df:")
print(df, end=sep)

print("Info:")
print(df.info(), end=sep)

print("Description:")
print(df.describe(), end=sep)

df.plot(subplots=True, figsize=(25, 15))
df.hist(bins=20, figsize=(25, 15))
plt.show()


But it says:

UserWarning: FigureCanvasAgg is non-interactive, and thus cannot be shown
plt.show()


I tried to add tkinter backend with:

import matplotlib
matplotlib.use("TkAgg")


But it cannot find agg, although I have tkinter, and gives:

ModuleNotFoundError: No module named 'tkinter'


So, are there any options to show plot without installing additional libraries?

python 3.10, matplotlib 3.8.1

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