Python 3.7 Migration

[extrospective]

Suggested modifications for modern-nlp-in-python/executable/Modern_NLP_in_Python.ipynb:

# Change tuple reference in sorted to use third term rather than multi-parameter lamba func:
ordered_vocab = sorted(ordered_vocab, key=lambda x: -x[2])

# Change 'w' to 'wb' when writing binary pickle file:
with open(tsne_filepath, 'wb') as f:

# Add 'rb' as argument rather than default argument:
with open(tsne_filepath, 'rb') as f:


# --------------------------------------
# bokeh unfortunately is not working when I pull this up so we do not get to see the visualization

# Tetsted with my own data (rather than yelp data), this code may help someone get started:
%matplotlib inline
import matplotlib.pyplot as plt

tsne_vectors.plot.scatter('x_coord', 'y_coord', figsize=(14,14))
ax = plt.gca()

for cntr, txt in enumerate(tsne_vectors.index):
    ax.annotate(txt, (tsne_vectors[tsne_vectors.index==txt].x_coord, tsne_vectors[tsne_vectors.index==txt].y_coord))
    if cntr > 50:
        # for demo purposes label an arbitrary set of points
        break
plt.show()