Python：无法运行由cx_freeze创建的Python可执行文件（带有文本文件）

Question

我已经编写了一个Python程序来分别备份MySQL db的所有对象。该程序在我的机器上运行时工作正常，但是当我使用cx_freeze创建可执行文件时，它无法在另一台机器上运行。 我发现错误的原因是配置的文本文件。当我不写配置文件时，程序运行良好，否则会出错。

我的提取代码：mysql_extractor.py。 请看看filter_parsing函数，错误的可能来源。当我的机器上运行

[mysql_extractor.py]

#!/usr/bin/env python3 

""" 
__title__  = "mysql_extractor.py" 
__description__ = "Script to extract objects of MySQL database individually" 

""" 

from __future__ import print_function 
import argparse 
import os 
import sys 
import pymysql 
import encodings.idna 

class MySQLExtractor: 

############################################ 
# 
# PUBLIC METHODS 
# 
############################################ 

    directory = "" 
    dumpcmd = "" 

    def parse_argument(self): 
     self.parser = argparse.ArgumentParser(description="MySQL dump process") 
     args_conn = self.parser.add_argument_group(title="Database Connection") 
     args_conn.add_argument('--host', dest="hostname", default="127.0.0.1", help="Host name or IP Address") 
     args_conn.add_argument('-u', '--username', dest="username", default="root", help="Database user name.") 
     args_conn.add_argument('--password', dest="password", default="", help="Password for the given user.") 
     args_conn.add_argument('-d', '--db', dest="db", default="test", help="Database name to connect to.") 

     args_filter = self.parser.add_argument_group(title="Filters", description="All object names given in any filter MUST be fully schema qualified.") 
     args_filter.add_argument('--gettables', dest="gettables", action="store_true", help="Get all tables only") 

     self.args = self.parser.parse_args() 
    # end _parse_arguments() 

    def gettables(self): 
     try: 
     print ("Dumping Tables..") 
     conn = pymysql.connect(host=self.args.hostname, user=self.args.username, passwd=self.args.password, database=self.args.db) 
     cursor = conn.cursor() 
     if not os.path.exists("tables"): 
      os.makedirs("tables") 
      os.chdir("tables") 
      query = "show full tables where Table_Type != 'VIEW'" 
      cursor.execute(query) 
      for row in cursor: 
       dumpcmd = self.dumpcmd 
       dumpcmd += " " + row[0] + " --no-data > " + row[0] + ".sql" 
       os.system(dumpcmd) 
      os.chdir(self.directory) 
     cursor.close() 
     conn.close() 
     except pymysql.Error as e: 
     print("Error lin connecting to the DB: " + str(e)) 
     sys.exit(2) 
    # end gettables 

    def filter_parsing(self): 
     """ 
     Some more code here, but not relevant to the question 
     """ 
     self.directory = self.args.db 
     os.makedirs(self.directory) 
     os.chdir(self.directory) 

     # Create config file <Probable source of error> 
     filename = "my_config" 
     f = open(filename, 'w') 
     f.write("[mysqldump]\n") 
     f.write("host='"+ self.args.hostname + "'\n") 
     f.write("user='"+ self.args.username + "'\n") 
     f.write("password='"+ self.args.password + "'\n") 
     f.close() 

     self.directory = os.getcwd() 
     self.dumpcmd = "mysqldump --defaults-file=" + self.directory + "/my_config" +" --skip-dump-date " + self.args.db 

     # If the following command is used and config file is not created, it gives no error. 
     # self.dumpcmd = "mysqldump -u " + self.args.username + " -h " + self.args.hostname + " --password=" + self.args.password + " --skip-dump-date " + self.args.db 

     #gettables is selected 
     if self.args.gettables==True: 
     self.gettables() 
     return 
    # end filter_parsing 

#end class MySQLExtractor 


p = MySQLExtractor() 
p.parse_argument() 
try: 
    p.filter_parsing() 
finally: 
    print ("Done")  

此代码工作正常。但是当我创建一个可执行文件并在其他机器上运行它时，它会给出错误。这是我的setup.py文件

[setup.py]

import sys 
from cx_Freeze import setup, Executable 
# Dependencies are automatically detected, but it might need fine tuning. 
build_exe_options = {"packages": ["os","MySQLdb"], "excludes": ["tkinter"]} 

# GUI applications require a different base on Windows (the default is for a 
# console application). 
base = None 
if sys.platform == "win32": 
    base = "Win32GUI" 

setup( name = "extractor", 
     version = "0.1", 
     description = "My GUI application!", 
     options = {"build_exe": build_exe_options}, 
     executables = [Executable("mysql_extractor.py", base=base)]) 

抛出的错误是：

Traceback (most recent call last): 
    File "<frozen importlib._bootstrap>", line 2237, in _find_and_load 
    File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked 
    File "<frozen importlib._bootstrap>", line 1191, in _load_unlocked 
    File "<frozen importlib._bootstrap>", line 1161, in _load_backward_compatible 
    File "/usr/lib64/python3.4/site-packages/cx_Freeze-5.0-py3.4-linux-x86_64.egg/cx_Freeze/initscripts/__startup__.py", line 12, in <module> 
    File "<frozen importlib._bootstrap>", line 2237, in _find_and_load 
    File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked 
    File "<frozen importlib._bootstrap>", line 1191, in _load_unlocked 
    File "<frozen importlib._bootstrap>", line 1161, in _load_backward_compatible 
    File "/usr/lib64/python3.4/site-packages/cx_Freeze-5.0-py3.4-linux-x86_64.egg/cx_Freeze/initscripts/Console.py", line 21, in <module> 
    File "<frozen importlib._bootstrap>", line 2237, in _find_and_load 
    File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked 
    File "<frozen importlib._bootstrap>", line 1191, in _load_unlocked 
    File "<frozen importlib._bootstrap>", line 1161, in _load_backward_compatible 
    File "/home/AD/abhishek.bhola/Documents/tmp/tmp_test.py", line 97, in <module> 
    File "/home/AD/abhishek.bhola/Documents/tmp/tmp_test.py", line 74, in filter_parsing 
    File "<frozen importlib._bootstrap>", line 2237, in _find_and_load 
    File "<frozen importlib._bootstrap>", line 2222, in _find_and_load_unlocked 
    File "<frozen importlib._bootstrap>", line 2164, in _find_spec 
    File "<frozen importlib._bootstrap>", line 1940, in find_spec 
    File "<frozen importlib._bootstrap>", line 1916, in _get_spec 
    File "<frozen importlib._bootstrap>", line 1897, in _legacy_get_spec 
    File "<frozen importlib._bootstrap>", line 863, in spec_from_loader 
    File "<frozen importlib._bootstrap>", line 904, in spec_from_file_location 
OSError: zipimport: can not open file ./lib64/python34.zip 

Answer 1

这已检测到问题，并在源代码库已经解决了。问题是使用相对路径启动可执行文件时所做的os.chdir（）调用。您有三种选择现在：

• 使用绝对路径启动可执行
• 获得更新的来源和构建它（那么你可以使用相对路径）
• 等待cx_Freeze的下一版本（希望很快！）