What does the .N mean in this block of Python code?

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0

I am working through Learn Python the Hard Way and am browsing through some code on Git Hub before moving on. I am just curious what the .N does on the line with "tm.N = 1000" and how it relates to the end of the code.

import matplotlib.pyplot as plt

import random
import pandas.util.testing as tm
tm.N = 1000
df = tm.makeTimeDataFrame()
import string
foo = list(string.letters[:5]) * 200
df['indic'] = list(string.letters[:5]) * 200
random.shuffle(foo)
df['indic2'] = foo
df.boxplot(by=['indic', 'indic2'], fontsize=8, rot=90)

plt.show()

asked 21 secs ago

user3099345

12

What does the .N mean in this block of Python code?