I would like to prevent the scientific notation in the red box of the picture below.
The code to generate the drawing is as follows.
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot(range(2003, 2012, 1), range(20030000, 20120000, 10000))
ax.ticklabel_format(useOffset=False, style='plain')
plt.show()
The above code is copied and modified from the discussion here, where that author wanted to prevent the offset inside the figure, not in the toolbar.