tufte3.py

from matplotlib.ticker import FuncFormatter
from matplotlib.patches import ArrowStyle

fig, ax = plt.subplots(figsize=(7, 3))

# remove splines
for spine in ax.spines.keys():
    ax.spines[spine].set_visible(False)

# set axis limits
ax.set_ylim(290, 420)
ax.set_xlim(1966.5, 1979)

# define axis ticks
ax.xaxis.set_ticks(x)
ax.yaxis.set_ticks(list(range(300, 420, 20)))

# increase space between axis labels and ticks
ax.yaxis.set_tick_params(pad=8)
ax.xaxis.set_tick_params(pad=8)

# create formatter to convert y_ticks to dollars


def format_ticks(x, pos):
    return f'${x}'


formatter = FuncFormatter(format_ticks)

# modify y ticks to dollars
ax.yaxis.set_major_formatter(formatter)