使用PdfPages python将多个绘图保存为pdf

Question

我正在尝试保存我的输出(70+图形)从jyputer笔记本到pdf文件。没有错误或其他任何东西，但只导出了第一个图。有没有人能帮我弄明白出了什么问题？

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.backends.backend_pdf

pdf = matplotlib.backends.backend_pdf.PdfPages("output.pdf")
df_num = df.select_dtypes(include = ['float64', 'int64'])

with PdfPages(r'output.pdf') as export_pdf:
    fig = plt.figure(figsize=(12,12))
    for col in df_num.columns:
        hist = df_num[col].hist(bins=10)
        print("Plotting for column {}".format(col))
        plt.title("{}".format(col), fontsize=20) 
        plt.show()        
    export_pdf.savefig(fig)       

Answer 1

好吧，最终我想通了。以下是我的解决方案：

with PdfPages(r'output_dist.pdf') as export_pdf:
    
    for col in df_f.columns:
        fig = plt.figure(figsize=(12,12))
        hist = df_f[col].hist(bins=10)
        print("Plotting for column {}".format(col))
        plt.title("{}".format(col), fontsize=20) 
        plt.show()
        
        export_pdf.savefig(fig)