import numpy as np
import matplotlib.pyplot as plt


menMeans = (154, 138, 161, 181, 151, 162, 156, 188, 145, 153, 124, 144);
N = len(menMeans);


print(type(menMeans));

ind = np.arange(N)  # the x locations for the groups
width = 0.35       # the width of the bars

fig, ax = plt.subplots()
rects1 = ax.bar(ind, menMeans, width, color='r')

womenMeans = (944, 818, 861, 781, 877, 799, 832, 801, 816, 696, 703, 752);

rects2 = ax.bar(ind + width, womenMeans, width, color='y')

# add some text for labels, title and axes ticks
ax.set_ylabel('Scores')
ax.set_title('Scores by group and gender')
ax.set_xticks(ind + width)
ax.set_xticklabels(('G1', 'G2', 'G3', 'G4', 'G5', 'G6', 'G7', 'G8', 'G9', 'G10', 'G11', 'G12'))

ax.legend((rects1[0], rects2[0]), ('Men', 'Women'))


plt.show()

<class 'tuple'>