python matplot.hist - remove gaps between bars

Question

I wish to create a histogram with no gaps between the bars. Tried to add argument bin or range but with no success.

import numpy as np
from matplotlib import pyplot as plt

population = 100
possible_answers = 4
scores = np.random.choice(range(possible_answers),population)
plt.hist(scores)
plt.show()

Answer 1

You need to use the bins argument to adjust which bins are used.

import numpy as np
from matplotlib import pyplot as plt

population = 100
possible_answers = 4
scores = np.random.choice(range(possible_answers),population)
plt.hist(scores, bins=range(possible_answers+1), ec="k")

plt.show()

Or, if you want to shift the bins

plt.hist(scores, bins=np.arange(possible_answers+1)-0.5, ec="k")