带有 import pyfits 的 py2exe 导致错误

py2exe with import pyfits cause error

使用 import pyfits 在 py 文件中执行 py2exe 时,导致错误。

如何避免这个错误?

我准备了test.py和test_setup.py(for py2exe),如下图

test.py 是显示参数指定的 fitsfile 数据的简单程序。

在 cmd.exe:

\python test_setup.py py2exe

=> 成功

\python test.py test.fits
[[[574 574 579 ..., 579 585 581]
  [574 582 583 ..., 582 579 577]
  [581 583 578 ..., 572 580 580]
  ...,
  [584 585 580 ..., 584 582 579]
  [585 583 582 ..., 586 575 578]
  [584 580 583 ..., 585 585 589]]]

=> 成功

\dist\test.exe test.fits
Traceback (most recent call last):
  File "test.py", line 4, in <module>
    import pyfits
  File "pyfits\__init__.pyo", line 11, in <module>
  File "pyfits\core.pyo", line 42, in <module>
  File "pyfits\convenience.pyo", line 62, in <module>
  File "pyfits\hdu\__init__.pyo", line 2, in <module>
  File "pyfits\hdu\compressed.pyo", line 21, in <module>
  File "pyfits\hdu\table.pyo", line 646, in <module>
  File "pyfits\hdu\table.pyo", line 909, in BinTableHDU
TypeError: unsupported operand type(s) for +=: 'NoneType' and 'str'

=> 错误


test.py

# -*- coding: utf-8 -*-

import sys
import pyfits

def showfits(path):
    hdulist = pyfits.open(path)
    imgs = hdulist[0].data
    hdulist.close()
    print imgs

if __name__ == "__main__":
    showfits(sys.argv[1])

test_setup.py

# -*- coding: utf-8 -*- 

from distutils.core import setup
import py2exe

option = {
    "compressed"    :    1    ,
    "optimize"      :    2    ,
    "bundle_files"  :    3    
}

setup(
    options = {
        "py2exe"    :    option
    },

    console = [
        {
            "script"   :    "test.py"
        }
    ],
    zipfile = None
)

查看 line it's crashing on:

dump.__doc__ += _tdump_file_format.replace('\n', '\n        ')

似乎 pyfits 正在做一些 class 级别的文档字符串操作。这可以合理地被认为是一个错误,因为不能总是假设方法的 __doc__ 将是一个字符串,就像在使用优化编译(就像你一样)的情况下,除其他外,剥离输出所有文档字符串。

我认为最简单的解决方法是禁用优化,至少现在是这样,或者修补 pyfits 以删除该行和任何类似的行。