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Console Output

This example demonstrates how sphinx-gallery captures and displays stdout output from print() statements and other console output.

Note

All printed output is captured and rendered in the generated documentation, making it easy to show computation results.

import matplotlib.pyplot as plt

Basic Print Statements

Simple print output is captured and displayed in a styled output block.

print("Hello from sphinx-gallery!")
print("This output is captured and displayed.")

Hello from sphinx-gallery!
This output is captured and displayed.

Formatted Output

More complex formatted output with multiple lines.

print("=" * 50)
print("Formatted Report")
print("=" * 50)

data = {"apples": 12, "oranges": 8, "bananas": 15, "grapes": 23}

print("\nFruit Inventory:")
print("-" * 30)
for fruit, count in data.items():
    print(f"  {fruit.capitalize():12} : {count:3d} items")
print("-" * 30)
print(f"  {'Total':12} : {sum(data.values()):3d} items")

==================================================
Formatted Report
==================================================

Fruit Inventory:
------------------------------
  Apples       :  12 items
  Oranges      :   8 items
  Bananas      :  15 items
  Grapes       :  23 items
------------------------------
  Total        :  58 items

Numeric Computations

Output from calculations and data processing.

import numpy as np

arr = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

print(f"Array: {arr}")
print(f"Sum: {arr.sum()}")
print(f"Mean: {arr.mean():.2f}")
print(f"Std: {arr.std():.2f}")
print(f"Min: {arr.min()}, Max: {arr.max()}")

Array: [ 1  2  3  4  5  6  7  8  9 10]
Sum: 55
Mean: 5.50
Std: 2.87
Min: 1, Max: 10

Multi-line and Tabular Output

Displaying structured data in table format.

headers = ["Name", "Age", "City"]
rows = [
    ["Alice", 28, "New York"],
    ["Bob", 34, "Los Angeles"],
    ["Charlie", 22, "Chicago"],
]

# Print as table
print(f"\n{headers[0]:<10} {headers[1]:<6} {headers[2]:<15}")
print("-" * 35)
for row in rows:
    print(f"{row[0]:<10} {row[1]:<6} {row[2]:<15}")

Name       Age    City
-----------------------------------
Alice      28     New York
Bob        34     Los Angeles
Charlie    22     Chicago

Return Values

The last expression in a code block is also displayed if it has a value.

result = {"status": "success", "count": 42, "items": ["a", "b", "c"]}
result

{'status': 'success', 'count': 42, 'items': ['a', 'b', 'c']}

Minimal Plot

A simple plot to ensure this example runs (files must start with plot_).

plt.figure(figsize=(4, 2))
plt.text(0.5, 0.5, "Output Demo", ha="center", va="center", fontsize=16)
plt.axis("off")
plt.tight_layout()
plt.show()