python从PDF文件中提取文本和文本坐标

1. 行/段

from pdfminer.pdfpage import PDFPage
from pdfminer.pdfinterp import PDFResourceManager
from pdfminer.pdfinterp import PDFPageInterpreter
from pdfminer.converter import PDFPageAggregator
from pdfminer.layout import LAParams, LTTextBox

fp = open('main.pdf', 'rb')

rsrcmgr = PDFResourceManager()
laparams = LAParams()
device = PDFPageAggregator(rsrcmgr, laparams=laparams)
interpreter = PDFPageInterpreter(rsrcmgr, device)
pages = PDFPage.get_pages(fp)
for page in pages:
    print('Processing next page...')
    interpreter.process_page(page)
    layout = device.get_result()
    for lobj in layout:
        if isinstance(lobj, LTTextBox):
            x, y, text = lobj.bbox[0], lobj.bbox[3], lobj.get_text()
            print('At %r is text: %s' % ((x, y), text))

2. 按字符

import requests
import io
from pdfminer.pdfdocument import PDFDocument
from pdfminer.pdfpage import PDFPage
from pdfminer.pdfparser import PDFParser
from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
from pdfminer.converter import PDFPageAggregator
from pdfminer.layout import LAParams, LTText, LTChar, LTAnno


def parse_char_layout(layout):
    """解析页面内容，一个字母一个字母的解析"""
    # bbox:
    # x0：从页面左侧到框左边缘的距离。
    # y0：从页面底部到框的下边缘的距离。
    # x1：从页面左侧到方框右边缘的距离。
    # y1：从页面底部到框的上边缘的距离
    for textbox in layout:
        if isinstance(textbox, LTText):
            for line in textbox:
                for char in line:
                    # If the char is a line-break or an empty space, the word is complete
                    if isinstance(char, LTAnno) or char.get_text() == ' ':
                        pass
                    elif isinstance(char, LTChar):
                        print("坐标 x:", char.bbox[0], "y:", char.bbox[3], " ||| ", char.get_text())


if __name__ == '__main__':
    # req = requests.get("http://www.africau.edu/images/default/sample.pdf")
    # fp = io.BytesIO(req.content)
    fp = open('main 1.pdf', 'rb')
    parser = PDFParser(fp)  # 用文件对象来创建一个pdf文档分析器
    doc: PDFDocument = PDFDocument(parser)  # 创建pdf文档

    rsrcmgr = PDFResourceManager()  # 创建PDF，资源管理器，来共享资源
    # 创建一个PDF设备对象
    laparams = LAParams()
    device = PDFPageAggregator(rsrcmgr, laparams=laparams)
    # 创建一个PDF解释其对象
    interpreter = PDFPageInterpreter(rsrcmgr, device)
    # 循环遍历列表，每次处理一个page内容
    # doc.get_pages() 获取page列表
    interpreter = PDFPageInterpreter(rsrcmgr, device)
    # 处理文档对象中每一页的内容
    # doc.get_pages() 获取page列表
    # 循环遍历列表，每次处理一个page的内容
    # 这里layout是一个LTPage对象 里面存放着 这个page解析出的各种对象 一般包括LTTextBox, LTFigure, LTImage, LTTextBoxHorizontal 等等 想要获取文本就获得对象的text属性，
    for page in PDFPage.create_pages(doc):
        print('================ 新页面 ================')
        interpreter.process_page(page)
        layout = device.get_result()
        parse_char_layout(layout)  # 解析字母

3. 按词

from pdfminer.layout import LAParams, LTTextBox, LTText, LTChar, LTAnno
from pdfminer.pdfpage import PDFPage
from pdfminer.pdfinterp import PDFPageInterpreter, PDFResourceManager
from pdfminer.converter import PDFPageAggregator

#Imports Searchable PDFs and prints x,y coordinates
fp = open('main 1.pdf', 'rb')
manager = PDFResourceManager()
laparams = LAParams()
dev = PDFPageAggregator(manager, laparams=laparams)
interpreter = PDFPageInterpreter(manager, dev)
pages = PDFPage.get_pages(fp)

for page in pages:
    print(' - Processing  -')
    interpreter.process_page(page)
    layout = dev.get_result()
    x, y, text = -1, -1, ''
    for textbox in layout:
        if isinstance(textbox, LTText):
            for line in textbox:
                for char in line:
                    # If the char is a line-break or an empty space, the word is complete
                    if isinstance(char, LTAnno) or char.get_text() == ' ':
                        if x != -1:
                            print('At %r is text: %s' % ((x, y), text))
                        x, y, text = -1, -1, ''
                    elif isinstance(char, LTChar):
                        text += char.get_text()
                        if x == -1:
                            x, y, = char.bbox[0], char.bbox[3]
    # If the last symbol in the PDF was neither an empty space nor a LTAnno, print the word here
    if x != -1:
        print('At %r is text: %s' % ((x, y), text))

参考：https://www.cnpython.com/qa/786940