import matplotlib.pyplot as plt
import numpy as np
y_values = [0.1, 0.3, 0.4, 0.2]
text_values = ["word 1", "word 2", "word 3", "word 4"]
x_values = np.arange(1, len(text_values) + 1, 1)

plt.bar(x_values, y_values, align='center')
# Decide which ticks to replace.
new_ticks = ["word for " + str(y) if y != 0 else str(y) for y in y_values]
plt.yticks(y_values, new_ticks)
plt.xticks(x_values, text_values)
plt.show()