To replace the comma with a space in the StrMethodFormatter, you can use Python's string formatting with a locale or custom formatting. Here's how to do it:

import matplotlib.pyplot as plt

plt.matplotlib.ticker.StrMethodFormatter('{x: .0f}')

Explanation:

• {x:,.0f}: Uses a comma as the thousands separator (e.g., 1,000).
• {x: .0f}: Uses a space as the thousands separator (e.g., 1 000).

This change directly replaces the comma with a space in the formatted string. If you need to ensure this works for all locales, you can also explicitly set the locale, but the above solution is the simplest for your case.