Dollar Sign with Thousands Comma Tick Labels

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You can use StrMethodFormatter, which uses the str.format() specification mini-language.

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
import matplotlib.ticker as mtick

df = pd.DataFrame({'A': ['A', 'B'], 'B': [1000,2000]})

fig, ax = plt.subplots(1, 1, figsize=(2, 2))
df.plot(kind='bar', x='A', y='B',
        align='center', width=.5, edgecolor="none", 
        color="grey", ax=ax)

fmt="${x:,.0f}"
tick = mtick.StrMethodFormatter(fmt)
ax.yaxis.set_major_formatter(tick) 
plt.xticks(rotation=25)

plt.show()

Both commas and dollar signs

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