如何修复'str'对象不可调用？使用matplotlib吗？

Question

我有从数据框读取并用X＆Y绘制直方图的python脚本。问题是当我尝试绘制选定的文件以绘制系统崩溃并显示以下错误时：

Traceback (most recent call last) <ipython-input-37-12c65f478c54> in <module>
      4 plt.figure(figsize=(12,6))
      5 plt.xlim(0,45)
----> 6 plt.xlabel("word count")
      7 plt.ylabel("frequency")
      8 g = plt.hist([x,y],color=["r","b"],alpha=0.5,label=["positive","negative"])

TypeError: 'str' object is not callable

code

#plot word count distribution for both positive and negative sentiment
x= df_tweet_preds["word count"][df_tweet_preds.predictions ==1]
y= df_tweet_preds["word count"][df_tweet_preds.predictions ==0]
plt.figure(figsize=(12,6))
plt.xlim(0,45)
plt.xlabel("word count")
plt.ylabel("frequency")
g = plt.hist([x,y],color=["r","b"],alpha=0.5,label=["positive","negative"])
plt.legend(loc="upper right")

Answer 1

ax.set_xlabel('Smarts')
ax.set_ylabel('Probability density')
plt.show()