#!/usr/bin/env python
# coding: utf-8

# # A sample notebook

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print('hello')


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get_ipython().run_line_magic('matplotlib', 'inline')
import matplotlib.pyplot as plt
import numpy as np
plt.plot(np.random.random(100))


# A function for displaying the summary of a notebook object.
# It prints a simple summary, such as:
# 
# ```
#   1   markdown cells, total:   4 lines
#   5       code cells, total:   4 lines
#   1    heading cells, total:   1 lines
# ```

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def nb_info(nb):
    """display a summary of the contents of a notebook"""
    cell_counts = {}
    cell_lines = {}
    
    for cell in nb.cells:
        cell_type = cell.cell_type
        count = cell_counts.setdefault(cell_type, 0)
        lines = cell_counts.setdefault(cell_type, 0)
        cell_counts[cell_type] = count + 1
        try:
            content = cell.source
        except AttributeError:
            content = cell.input
        cell_lines[cell_type] = lines + len(content.splitlines())
    
    for cell_type in cell_counts:
        print("%3i %10s cells, total: %3i lines" % (cell_counts[cell_type], cell_type, cell_lines[cell_type]))