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import matplotlib.pyplot as plt
import numpy as np

# 鏁版嵁
categories = ['A', 'B', 'C', 'D']
values1 = [10, 15, 20, 25]
values2 = [15, 20, 25, 30]

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fig, ax = plt.subplots()

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bar_width = 0.35

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bar1 = ax.bar(np.arange(len(categories)), values1, bar_width, label='Group 1')
bar2 = ax.bar(np.arange(len(categories)) + bar_width, values2, bar_width, label='Group 2')

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ax.set_xticks(np.arange(len(categories)) + bar_width / 2)
ax.set_xticklabels(categories)
ax.set_xlabel('Categories')
ax.set_ylabel('Values')
ax.set_title('Grouped Bar Chart')

# 娣诲姞鍥句緥
ax.legend()

# 鏄剧ず鍥惧舰
plt.show()

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