如何使用python中的tabula提取pdf文件中存在的多个表？

Question

If only one table is present in a pdf file then that can be simply extracted using the code

from tabula import read_pdf
df = read_pdf(r"C:\Users\Himanshu Poddar\Desktop\pdf_file.pdf")

But if there is more than one table present in a pdf file.I am unable to extract those tables.Because its only extracting the first one.

Answer 1

There? Hope the below code will be helpful, still I didn't test it with large tables. Let me know is there any scenario which could affect or fail with this code. I'm new to python so that I can improve my knowledge :)

import os
from tabula import wrapper
os.chdir("E:/Documents/myPy/")
tables = wrapper.read_pdf("MyPDF.pdf",multiple_tables=True,pages='all',encoding='utf-8',spreadsheet=True)

i=1
for table in tables:
    table.columns = table.iloc[0]
    table = table.reindex(table.index.drop(0)).reset_index(drop=True)
    table.columns.name = None
    #To write Excel
    table.to_excel('output'+str(i)+'.xlsx',header=True,index=False)
    #To write CSV
    table.to_csv('output'+str(i)+'.csv',sep='|',header=True,index=False)
    i=i+1

Answer 2

Even when using the tabula-py wrapper you can use all the same options as can be found on the Tabula Java Docs.

In your case you can simply add pages = "all":

from tabula import read_pdf
df = read_pdf(r"C:\Users\Himanshu Poddar\Desktop\pdf_file.pdf", pages ="all")

Answer 3

如果您的 PDF 有多个表，您可以使用multiple_tables=true选项。

Answer 4

using multiple_tables=true parameter in the read_pdf will solve the issue

Example ::

from tabula import wrapper
df = wrapper.read_pdf("sample.pdf",multiple_tables=True)

Now the read_pdf is in wrapper, so we need to import that and use as shown above

Answer 5

If the tables have the same structure(ie, have the same table structure and the same relative position) in all pages of pdf, then you can set pages='all' to get the correct result.

If not, you may need to iterate all pages to parser the pdf.

There are a documention that explains it in detail.

Answer 6

If only one table is present in a pdf file then that can be simply extracted using the code

from tabula import read_pdf
df = read_pdf(r"C:\Users\Himanshu Poddar\Desktop\pdf_file.pdf")

But if there is more than one table present in a pdf file.I am unable to extract those tables.Because its only extracting the first one.