python - 从字符串和列表的元组中以字符串形式返回所有值

Question

我想将函数中的所有值作为字符串返回。现以返回值为例:

('EVENTS', ['test'], [], ['Alcohol'])

返回元组的代码是:

def convert(fname, pages=None,encoding='utf-8'):
    if not pages:
        pagenums = set()
    else:
        pagenums = set(pages)

    output = StringIO()
    manager = PDFResourceManager()
    converter = TextConverter(manager, output, laparams=LAParams())
    interpreter = PDFPageInterpreter(manager, converter)

    infile = open(fname, 'rb')
    for page in PDFPage.get_pages(infile, pagenums):
        interpreter.process_page(page)
    infile.close()
    converter.close()
    text = output.getvalue()
    if len(text)>=500:
        regex3=re.search(r"\d+(?:[.-]\w+)*\s*(General Information|Process validation|Justification of Specification(s)|Specification|Analytical Procedures|Validation of Analytical Procedures|Batch Analyses|Justification of Specification|Reference Standards or Materials|Container Closure Systems|Stability Summary and Conclusions|Post Approval Stability Protocol and Stability Commitment)",text,re.IGNORECASE)
        if regex3:
            org = []
            with open('C:\\Users\\Ak\\.spyder-py3\\org.csv', newline='', encoding ='latin1') as myFile:
                reader = csv.reader(myFile)
                for row in reader:
                    if len(row[1])>=4:
                        v = re.search(r'\b' + re.escape(row[1]) + r'\b', text, re.IGNORECASE)
                        if v: 
                            a = v.group(0)
                            org.append(a)
                            break
            dosage = []
            with open('C:\\Users\\Ak\\.spyder-py3\\do.csv', newline='', encoding ='latin1') as myFile:
                reader = csv.reader(myFile)
                for row in reader:
                    if len(row[1])>=4:
                        w = re.search(r'\b' + re.escape(row[1]) + r'\b', text, re.IGNORECASE)
                        if w: 
                            b = w.group(0)
                            dosage.append(b)
                            break
            substances = [] 
            with open('C:\\Users\\Ak\\.spyder-py3\\sub.csv', newline='', encoding ='latin1') as myFile:
                reader = csv.reader(myFile)
                for row in reader:
                    if len(row[1])>=4:
                        z = re.search(r'\b' + re.escape(row[1]) + r'\b', text, re.IGNORECASE)
                        if z: 
                            c=z.group(0)
                            substances.append(c)
                            break                            
            o = regex3.group(1), org, dosage, substances
            return o

从这里我想返回值:

EVENTS,test, [], Alcohol

或者

EVENTS,test,,Alcohol

如何将返回值格式化为字符串

Answer 1

您可以尝试执行以下操作:

o = regex3.group(1), "".join(org), "".join(dosage), "".join(substances)
o = list(o)
# Join list items using join() 
str_list = ",".join(o) 
# Option 1
# str_list = eval(str_list)
# OR
# Option 2
# str_list = str_list.replace("'", "")
return str_list

请告诉我这是否有效。