#展示一列数据各数值分布情况
import seaborn as sns
import matplotlib.pyplot as plt
ProductCD_counts = train_obj_cols['ProductCD'].value_counts()
plt.figure(figsize=(7,4))
sns.barplot(ProductCD_counts.index, ProductCD_counts.values, alpha=0.8)
plt.show()
#使用散点图查看特征之间的关系
# create dataframe from data in X_train
# label the columns using the strings in iris_dataset.feature_names
iris_dataframe = pd.DataFrame(X_train, columns=iris_dataset.feature_names)
# create a scatter