You want to run a Matplotlib script on a server without a display and save plots as PNG files. Which backend and code order is correct?

hard📝 Application Q9 of 15

Matplotlib - Interactive Features

Aimport matplotlib matplotlib.use('Agg') import matplotlib.pyplot as plt plt.plot(...) plt.savefig(...)

Bimport matplotlib.pyplot as plt matplotlib.use('TkAgg') plt.plot(...) plt.savefig(...)

Cimport matplotlib matplotlib.use('Qt5Agg') import matplotlib.pyplot as plt plt.plot(...) plt.savefig(...)

Dimport matplotlib.pyplot as plt plt.plot(...) plt.savefig(...)

Step-by-Step Solution

Solution:

Step 1: Choose backend for no-display server
'Agg' backend works without GUI and saves plots to files.
Step 2: Set backend before importing pyplot
Backend must be set before importing pyplot to avoid errors.
Final Answer:
import matplotlib\nmatplotlib.use('Agg')\nimport matplotlib.pyplot as plt\nplt.plot(...)\nplt.savefig(...) -> Option A
Quick Check:
No-display server backend and order = B [OK]

Quick Trick: Set 'Agg' backend before pyplot import on headless servers [OK]

Common Mistakes:

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