使用 python 2.7 导入 hashlib 而不是 2.6 时出错

Question

我在 Solaris 10 (x86) 上。

到现在为止，我使用的是python2.6。 今天，我安装了 python2.7，在 2.7 上导入 hashlib 时发生了一个奇怪的错误，但在 2.6 上没有：

蟒蛇 2.6：

root@myserver [PROD] # python2.6 -c "import hashlib"
root@myserver [PROD] # 

Python 2.7：

root@myserver [PROD] # python2.7 -c "import hashlib"
ERROR:root:code for hash md5 was not found.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/hashlib.py", line 139, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/usr/local/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type md5
ERROR:root:code for hash sha1 was not found.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/hashlib.py", line 139, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/usr/local/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha1
ERROR:root:code for hash sha224 was not found.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/hashlib.py", line 139, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/usr/local/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha224
ERROR:root:code for hash sha256 was not found.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/hashlib.py", line 139, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/usr/local/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha256
ERROR:root:code for hash sha384 was not found.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/hashlib.py", line 139, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/usr/local/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha384
ERROR:root:code for hash sha512 was not found.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/hashlib.py", line 139, in <module>
    globals()[__func_name] = __get_hash(__func_name)
  File "/usr/local/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type sha512

我不明白为什么会出现此错误，因为我正在尝试在同一台机器上导入。

预先感谢您的帮助！

Answer 1

python2.7 包依赖于libssl1_0_0包（openssl_1.0 运行时库）。

我安装了它，并在$LD_LIBRARY_PATH环境变量中添加了/usr/local/ssl/lib目录。

现在它完美无缺！ :)

Answer 2

对我来说同样的错误。 我的情况是复制的virtenv在新服务器上给我这个错误。 默认的python 正在工作。

我用过

python2.7 -v -c "import hashlib" 2> output.txt

您应该在output.txt看到类似下面这一行的内容：

import hashlib # precompiled from hashlib.pyc
dlopen("/path/to/virtenv/lib/python2.7/lib-dynload/_hashlib.so", 2);

ldd /path/to/virtenv/lib/python2.7/lib-dynload/_hashlib.so
...
   libssl.so.0.9.8 => not found
   libcrypto.so.0.9.8 => not found
...

所以我所做的很简单：

cp /usr/lib/python2.7/lib-dynload/_hashlib.so /*path-to-virtenv*/manager/lib/python2.7/lib-dynload/_hashlib.so

Answer 3

您可以使用以下命令并检查缺少哪些库，

ldd /path/to/Python-Library/_hashlibmodule.so

例如

ldd /usr/local/lib/python2.7/_hashlibmodule.so

如果您得到如下输出，则意味着您缺少必要的 openssl 库

    linux-vdso.so.1 =>  (0x00007fffd6f6a000)
    libssl.so.6 => not found
    libcrypto.so.6 => not found
    libpython2.7.so.1.0 => /lib64/libpython2.7.so.1.0 (0x00007ffb18b54000)
    libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ffb18937000)
    libc.so.6 => /lib64/libc.so.6 (0x00007ffb185a2000)
    libdl.so.2 => /lib64/libdl.so.2 (0x00007ffb1839e000)
    libutil.so.1 => /lib64/libutil.so.1 (0x00007ffb1819b000)
    libm.so.6 => /lib64/libm.so.6 (0x00007ffb17f16000)
    /lib64/ld-linux-x86-64.so.2 (0x0000003e0a000000)

Answer 4

我知道您使用的是 Solaris，但我已经按照 这些说明安装了旧的 libssl1.0-dev，它在 Ubuntu 20.04 上运行。

编辑文件/etc/apt/sources.list并将此行添加到它的末尾。

deb http://security.ubuntu.com/ubuntu bionic-security main

在那之后运行：

sudo apt update && apt-cache policy libssl1.0-dev

最后，

sudo apt-get install libssl1.0-dev