我正在创建一个脚本来从扫描的 pdf 中提取文本，以创建一个 JSON 字典，以便稍后在 MongoDB 中实现。我遇到的问题是，通过 Textract 模块使用 tesseract-ocr 成功提取了所有文本，但它正在被 python 读取，因此 PDF 上的所有空白都被转换为 '\n' ，因此很难提取必要的信息。
我试过用一堆代码来清理它，但它仍然不是很可读。它去掉了所有的冒号，我觉得这将使识别键和值变得容易得多。
stringedText = str(text)
cleanText = rmStop.replace('\n','')
splitText = re.split(r'\W+', cleanText)
caseingText = [word.lower() for word in splitText]
cleanOne = [word for word in caseingText if word != 'n']
dexStop = cleanOne.index("od260")
dexStart = cleanOne.index("sheet")
clean = cleanOne[dexStart + 1:dexStop]
我仍然留下了相当多的不干净的几乎过度处理的数据。所以在这一点上，我知道如何使用它。
这就是我提取数据的方式
text = textract.process(filename, method="tesseract", language="eng")
我也尝试过 nltk 并且取出了一些数据并使其更易于阅读，但是仍然有很多 \n 混淆了数据。
这是nltk代码：
stringedText = str(text)
stop_words = set(stopwords.words('english'))
tokens = word_tokenize(stringedText)
rmStop = [i for i in tokens if not i in ENGLISH_STOP_WORDS]
这是我从我尝试的第一次清理中得到的：
['n21', 'feb', '2019', 'nsequence', 'lacz', 'rp', 'n5', 'gat', 'ctc', 'tac', 'cat', 'ggc', 'gca', 'cat', 'ttc', 'ccc', 'gaa', 'aag', 'tgc', '3', 'norder', 'no', '15775199', 'nref', 'no', '207335463', 'n25', 'nmole', 'dna', 'oligo', '36', 'bases', 'nproperties', 'amount', 'of', 'oligo', 'shipped', 'to', 'ntm', '50mm', 'nacl', '66', '8', 'xc2', 'xb0c', '11', '0', '32', '6', 'david', 'cook', 'ngc', 'content', '52', '8', 'd260', 'mmoles', 'kansas', 'state', 'university', 'biotechno', 'nmolecular', 'weight', '10', '965', '1', 'nnmoles']
我需要一个看起来像这样的 JSON 数组：
"lacz-rp" : {
"Date" : "21-feb-2019",
"Sequence" : "gatctctaccatggcgcacatttccccgaaaagtgc"
"Order No." : "15775199"
"Ref No." : "207335463"
}
等等......我只是不知道该怎么做。我还可以提供原始输出。这是我触摸它之前的样子。以上数据是我制作完整数组所需的所有信息。
b' \n\nIDT\nINTEGRATED DNA TECHNOLOGIES,\nOLIGONUCLEOTIDE SPECIFICATION SHEET\n\n \n\n21-Feb-2019\n\nSequence - LacZ-RP\n\n5\'- GAT CTC TAC CAT GGC GCA CAT TTC CCC GAA AAG TGC -3\'\n\nOrder No. 15775199\nref.No. 207335463\n\n25 nmole DNA Oligo, 36 bases\n\n \n\nProperties Amount Of Oligo Shipped To\nTm (50mM NaCl)*:66.8 \xc2\xb0C 11.0= 32.6 DAVID COOK\nGC Content: 52.8% D260 mmoles KANSAS STATE UNIVERSITY-BIOTECHNO.\n\nMolecular Weight: 10,965.1\nnmoles/OD260: 3.0\nug/OD260: 32.6\nExt. Coefficient: 336,200 L/(mole-cm)\n\nSecondary Structure Calcul\n\n \n\nns\nLowest folding free energy (kcal/mole): -3.53 at 25 \xc2\xb0C\n\nStrongest Folding Tm: 46.6 \xc2\xb0C\n\n \n\nOligo Base Types Quantity\n\nDi eo\nModifications and Services Quantity\nStandard Desalting 7\n\nMfg. 1D 289505556\n\n207335463 ~<<IDT\nD.cooK,\n\n2eosoesse 2uren20%9\n\n207335463 ~XIDT\nD.cooK,\n\n \n \n \n\n \n\nINSTRUCTIONS\n\n.d contents may appear as either a translucent film or a white powder.\nice does not affect the quality of the oligo,\n\n\xe2\x80\x9cPlease centrifuge tubes prior to opening. Some of the product may have been\ndislodged during shipping.\n\n\xe2\x80\x9cThe Tm shown takes no account of Mg?* and dNTP concentrations. Use the\nOligoAnalyzer\xc2\xae Program at www.idtdna.com/scitools to calculate accurate Tm for\nyour reaction conditions.\n\nFor 100 |M: add 326 [iL\n\nBURT HALL #207\n\nMANHATTAN, KS 66506\n\nUSA\n\n7855321362\n\nCustomer No. 378741 PO No.06BF3000\n\nDisclaimer\n\nSee on reverse page notes (I) (Il) & (lll) for usage, label\nlicense, and product warranties\n\x0cUse Restrictions: Oligonucleotides and nucleic acid products are manufactured and sold by IDT for the\ncustomer\'s research purposes only. Resale of IDT products requires the express written consent of IDT.\nUnless pursuant to a separate signed agreement by authorized IDT officials, IDT products are not sold\nfor (and have not been approved) for use in any clinical, diagnostic or therapeutic applications.\nObtaining license or approval to use IDT products in proprietary applications or in any non-research\n(clinical) applications is the customer\'s exclusive responsibility. 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