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What will happen if you run this code snippet?

medium📝 Predict Output Q13 of 15
Matplotlib - Interactive Features
What will happen if you run this code snippet?
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
plt.plot([1, 2, 3], [4, 5, 6])
plt.savefig('plot.png')
AA plot window will open showing the graph
BThe plot will be saved to 'plot.png' without opening a window
CAn error will occur because 'Agg' backend does not support plotting
DNothing will happen because plt.show() is missing
Step-by-Step Solution
Solution:
  1. Step 1: Identify the 'Agg' backend behavior

    'Agg' is a non-interactive backend that saves plots to files but does not open windows.
  2. Step 2: Analyze the code actions

    The code plots data and saves it to 'plot.png' without calling plt.show(), so no window opens.
  3. Final Answer:

    The plot will be saved to 'plot.png' without opening a window -> Option B
  4. Quick Check:

    'Agg' saves files, no window = B [OK]
Quick Trick: Agg backend saves files, no GUI window opens [OK]
Common Mistakes:
  • Expecting a plot window to open
  • Thinking plt.show() is needed to save files
  • Assuming 'Agg' backend causes errors

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