Python - Excel에서 비어있는 형식의 빈 셀 가져 오기

Question

Excel에서 스프레드 시트의 데이터를 Python을 사용하여 액세스 데이터베이스로 가져 오려고합니다. 스크립트를 만들었지 만 날짜 필드에 문제가 있습니다. 이 날짜 (Problem_due_date 및 Root_cause_identified)

그것은 테이블 벌금에 데이터를 삽입이 포함 된 Excel 스프레드 시트에서 두 COLS은 현재 그러나 나는 날짜를 사용하여 실행 시도

import pypyodbc 
import xlrd 
import datetime 

book = xlrd.open_workbook("I:\Documents\Management\ReportAutomationProject\EMEA YTD.xls") 
sheet = book.sheet_by_name("Page 1") 

conn = pypyodbc.connect(
    r"Driver={Microsoft Access Driver (*.mdb, *.accdb)};" + 
    r"Dbq=I:\Documents\Management\ReportAutomationProject\Data.accdb;") 
cur = conn.cursor() 

query = """insert into Problems ([Number], Title, Active, Causing_IT_Service, Causing_Application, Causing_application_Instance, Incident_Severity, Problem_due_date, Assignment_group, Assignee, Impacted_countries, Impacted_regions, Business_impact_description, Workaround, Root_cause, Root_cause_level_3, Root_cause_level_2, Root_cause_level_1, Root_cause_identified, Causing_organisation, Problem_Summary, Activity_due, Approval_status, Major_incident, Approval_history, Approval_set, Business_duration, Duration) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)""" 

for r in range(1, sheet.nrows): 
    Number = sheet.cell(r, 0).value 
    Title = sheet.cell(r, 1).value 
    Active = sheet.cell(r, 2).value 
    Causing_IT_Service = sheet.cell(r, 3).value 
    Causing_Application = sheet.cell(r, 4).value 
    Causing_application_Instance = sheet.cell(r, 5).value 
    Incident_Severity = sheet.cell(r, 6).value 
    Problem_due_date = sheet.cell(r, 7).value 
    Problem_due_date = datetime.datetime(*xlrd.xldate_as_tuple(Problem_due_date, book.datemode)) 
    Assignment_group = sheet.cell(r, 8).value 
    Assignee = sheet.cell(r, 9).value 
    Impacted_countries = sheet.cell(r, 10).value 
    Impacted_regions = sheet.cell(r, 11).value 
    Business_impact_description = sheet.cell(r, 12).value 
    Workaround = sheet.cell(r, 13).value 
    Root_cause = sheet.cell(r, 14).value 
    Root_cause_level_3 = sheet.cell(r, 15).value 
    Root_cause_level_2 = sheet.cell(r, 16).value 
    Root_cause_level_1 = sheet.cell(r, 17).value 
    Root_cause_identified=sheet.cell(r, 18).value 
    Root_cause_identified=datetime.datetime(*xlrd.xldate_as_tuple(Root_cause_identified, book.datemode)) 
    Causing_organisation = sheet.cell(r, 19).value 
    Problem_Summary = sheet.cell(r, 20).value 
    Activity_due = sheet.cell(r, 21).value 
    Approval_status = sheet.cell(r, 22).value 
    Major_incident = sheet.cell(r, 23).value 
    Approval_history = sheet.cell(r, 24).value 
    Approval_set = sheet.cell(r, 25).value 
    Business_duration = sheet.cell(r, 26).value 
    Duration = sheet.cell(r, 27).value 
    values = (Number, Title, Active, Causing_IT_Service, Causing_Application, Causing_application_Instance, Incident_Severity, Problem_due_date, Assignment_group, Assignee, Impacted_countries, Impacted_regions, Business_impact_description, Workaround, Root_cause, Root_cause_level_3, Root_cause_level_2, Root_cause_level_1, now, Causing_organisation, Problem_Summary, Activity_due, Approval_status, Major_incident, Approval_history, Approval_set, Business_duration, Duration) 
    cur.execute(query, values) 

sql = """ 
select * from Problems 
""" 
cur.execute(sql) 

for results in cur: 
    print(results) 

cur.close() 
conn.commit() 
conn.close() 

텍스트로 데이터를 삽입 .datetime이 오류를 수신하지만 작업 메신저 것으로 보인다 xlrd.xldate_as_tuple와 :

C:\Python34\python.exe C:/Users/d/PycharmProjects/untitled/test.py 
Traceback (most recent call last): 
    File "C:/Users/d/PycharmProjects/untitled/test.py", line 11, in <module> 
    a1_as_datetime = datetime.datetime(*xlrd.xldate_as_tuple(a1, book.datemode)) 
    File "C:\Python34\lib\site-packages\xlrd\xldate.py", line 65, in xldate_as_tuple 
    if xldate < 0.00: 
TypeError: unorderable types: str() < float() 

나는 다음이 다시 데려 뭐죠로 드릴 다운. for 루프에서 꺼내면 잘 작동합니다. 나는 그때 평범한 인쇄 진술에 추가하고 Excel 스프레드 시트에서 빈 셀에 도달하자마자 실패한 것을 깨달았다.

어떻게하면이 셀을 건너 뛰거나 다시 포맷 할 수 있습니까?

Answer 1

텍스트 ('', 즉 공백) 값을 날짜로 변환하려고하며 숫자 값으로 만 작동하기 때문에 오류가 발생합니다. 단지 날짜 값 (날짜로 포맷 수레를) 변환하려면 다음과 같은 코드를 사용할 수 있습니다

for r in range(1, sheet.nrows): 
    values = [ datetime.datetime(*(xlrd.xldate_as_tuple(v, book.datemode))) 
       if t == xlrd.XL_CELL_DATE 
       else v 
       for t, v in zip(sheet.row_types(r), sheet.row_values(r)) ] 
    # if '' isn't acceptable for the date columns, you may need to fix them here... 
    # e.g. 
    # values[18] = values[18] or datetime.datetime.now() 
    cur.execute(query, values) 

당신은 여전히이 날짜 값이 아닌 경우 values[7] (Problem_due_date)와 values[18] (Root_cause_identified을)를 수정해야 할 수도 있습니다.