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MySQL日期范围使用Python:TypeError:不可处理类型:“bytearray”

date-range mysql-python bytearray python-3.x

Daniel · 技术社区 · 10 年前

我正试图弄清楚如何从一个表中提取数据,该表有一个名为“sent_time”的列,并且日期时间介于两个日期时间之间。我终于能够理解如何使用dateutil解析器来输入日期范围拉取的两个日期。我现在的问题是我遇到了这个错误:

Traceback (most recent call last):
  File "C:\Python34\timerange.py", line 75, in <module>
    worksheet.write(r,0,row[0])
  File "C:\Python34\lib\site-packages\xlsxwriter\worksheet.py", line 64, in cell_wrapper
    return method(self, *args, **kwargs)
  File "C:\Python34\lib\site-packages\xlsxwriter\worksheet.py", line 436, in write
    return self.write_string(row, col, *args)
  File "C:\Python34\lib\site-packages\xlsxwriter\worksheet.py", line 64, in cell_wrapper
    return method(self, *args, **kwargs)
  File "C:\Python34\lib\site-packages\xlsxwriter\worksheet.py", line 470, in write_string
    string_index = self.str_table._get_shared_string_index(string)
  File "C:\Python34\lib\site-packages\xlsxwriter\sharedstrings.py", line 128, in _get_shared_string_index
    if string not in self.string_table:
TypeError: unhashable type: 'bytearray'

让我困惑的是字节射线。你们能告诉我我做错了什么,我该怎么解决吗?

我想给你我所有其他文件的所有信息,以及我拍摄的目的,看看你是否可以复制并实际运行它,看看它是否不仅仅是我的系统或我拥有的某些配置。。

我有一个只有一张表的数据库。让我们称之为table1。该表由以下列组成:

假设这是两个或两个以上的客户相互运送货物。每个客户有三个id#。

我创建了一个配置。ini文件让我的生活更轻松

[mysql]
host = localhost
database = db_name
user = root
password = blahblah

我创建了一个python_mysql_dbconfig.py

from configparser import ConfigParser

def read_db_config(filename=âconfig.iniâ, section=âmysqlâ):
âââ Read database configuration file and return a dictionary object
:param filename: name of the configuration file
:param section: section of database configuration
:return: a dictionary of database parameters
âââ
# create parser and read ini configuration file
parser = ConfigParser()
parser.read(filename)

# get section, default to mysql
db = {}
if parser.has_section(section):
items = parser.items(section)
for item in items:
db[item[0]] = item[1]
else:
raise Exception(â{0} not found in the {1} fileâ.format(section, filename))

return db

这是我现在正在编写的代码…你能看一下吗?

# Establish a MySQL connection
from mysql.connector import MySQLConnection, Error
from python_mysql_dbconfig import read_db_config
db_config = read_db_config()
conn = MySQLConnection(**db_config)
cursor = conn.cursor(raw=True)

#to export to excel
import xlsxwriter
from xlsxwriter.workbook import Workbook

#to get the csv converter functions
import os
import subprocess
import glob

#to get the datetime functions
import datetime
from datetime import datetime
import dateutil.parser

#creates the path needed for output files
path = 'C:/Python34/output_files/'

#creates the workbook
output_filename = input('output filename:')
workbook = xlsxwriter.Workbook(path + output_filename + '.xlsx')
worksheet = workbook.add_worksheet()

#formatting definitions
bold    = workbook.add_format({'bold': True})
date_format = workbook.add_format({'num_format': 'yyyy-mm-dd hh:mm:ss'})
timeShape =  '%Y-%m-%d %H:%M:%S'

#actual query


query = (
    "SELECT sent_time, delivered_time, OBJ, id1_active, id2_active, id3_active, id1_inactive, id2_inactive, id3_inactive, location_active, location_inactive FROM table1 "
    "WHERE sent_time BETWEEN %s AND %s"
)
userIn = dateutil.parser.parse(input('start date:'))
userEnd = dateutil.parser.parse(input('end date:'))


# Execute sql Query
cursor.execute(query,(userIn, userEnd))
result = cursor.fetchall()


#sets up the header row
worksheet.write('A1','sent_time',bold)
worksheet.write('B1', 'delivered_time',bold)
worksheet.write('C1', 'customer_name',bold)
worksheet.write('D1', 'id1_active',bold)
worksheet.write('E1', 'id2_active',bold)
worksheet.write('F1', 'id3_active',bold)
worksheet.write('G1', 'id1_inactive',bold)
worksheet.write('H1', 'id2_inactive',bold)
worksheet.write('I1', 'id3_inactive',bold)
worksheet.write('J1', 'location_active',bold)
worksheet.write('K1', 'location_inactive',bold)
worksheet.autofilter('A1:K1')  #dropdown menu created for filtering


#print into client to see that you have results
print("     sent_time     ", "        delivered_time     ", "OBJ", "\t   id1_active  ", "   id2_active  ", "    id3_active  ", "\t", " id1_inactive ", " id2_inactive ", "  id3_inactive ", "\tlocation_active", "\tlocation_inactive")
for row in result:
    print(*row, sep='\t')


# Create a For loop to iterate through each row in the XLS file, starting at row 2 to skip the headers
for r, row in enumerate(result, start=1):  #where you want to start printing results inside workbook
    for c, col in enumerate(row):
        worksheet.write_datetime(r,0,row[0], date_format)
        worksheet.write_datetime(r,1, row[1], date_format)
        worksheet.write(r,2, row[2])
        worksheet.write(r,3, row[3])
        worksheet.write(r,4, row[4])
        worksheet.write(r,5, row[5])
        worksheet.write(r,6, row[6])
        worksheet.write(r,7, row[7])
        worksheet.write(r,8, row[8])
        worksheet.write(r,9, row[9])
        worksheet.write(r,10, row[10])




#close out everything and save
cursor.close()
workbook.close()
conn.close()

#print number of rows and bye-bye message
print ("- - - - - - - - - - - - -")
rows = len(result)
print ("I just imported "+ str(rows) + " rows from MySQL!")
print ("")
print ("Good to Go!!!")
print ("")


#CONVERTS JUST CREATED FILE TO CSV

# set path to folder containing xlsx files

out_path ='C:/Python34/csv_files'
os.chdir(path)


# find the file with extension .xlsx
xlsx = glob.glob(output_filename + '.xlsx')

# create output filenames with extension .csv
csvs = [x.replace('.xlsx','.csv') for x in xlsx]

# zip into a list of tuples
in_out = zip(xlsx,csvs)

# loop through each file, calling the in2csv utility from subprocess
for xl,csv in in_out:
   out = open(csv,'w')
   command = 'c:/python34/scripts/in2csv %s\\%s' % (path,xl)
   proc = subprocess.Popen(command,stdout=out)
   proc.wait()
   out.close()

print('XLSX and CSV files named ' + output_filename + ' were created')

1 回复 | 直到 10 年前

pvg 10 年前

您已在中禁用类型转换 cursor = conn.cursor(raw=True) 。拆下 raw=True 所以驱动程序不再为所有类型提供直接的字节射线。