升级fedora 24以后，安装软件报错 Complete!Traceback (most recent call last): File "/bin/dnf", line 58, in <modu
升级fedora 24以后，安装软件报错
Complete!Traceback (most recent call last): File "/bin/dnf", line 58, in <module> main.user_main(sys.argv[1:], exit_code=True) File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 174, in user_main errcode = main(args) File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 60, in main return _main(base, args) File "/usr/lib/python3.5/site-packages/dnf/base.py", line 102, in __exit__ self.close() File "/usr/lib/python3.5/site-packages/dnf/base.py", line 283, in close self._tempfile_persistor.get_saved_tempfiles()) File "/usr/lib/python3.5/site-packages/dnf/persistor.py", line 483, in get_saved_tempfiles return self._get_json_db(self.db_path) File "/usr/lib/python3.5/site-packages/dnf/persistor.py", line 425, in _get_json_db default = json.loads(content) File "/usr/lib64/python3.5/json/__init__.py", line 319, in loads return _default_decoder.decode(s) File "/usr/lib64/python3.5/json/decoder.py", line 339, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python3.5/json/decoder.py", line 355, in raw_decode obj, end = self.scan_once(s, idx)json.decoder.JSONDecodeError: Unterminated string starting at: line 1 column 122871 (char 122870)跟踪调试代码，/usr/lib64/python3.5/json/decoder.py，line 355 ，添加 print(s)
345 def raw_decode(self, s, idx=0):346 """Decode a JSON document from ``s`` (a ``str`` beginning with347 a JSON document) and return a 2-tuple of the Python348 representation and the index in ``s`` where the document ended.349 350 This can be used to decode a JSON document from a string that may351 have extraneous data at the end.352 353 """354 try:355 print(s) 356 obj, end = self.scan_once(s, idx)357 except StopIteration as err:358 raise JSONDecodeError("Expecting value", s, err.value) from None359 return obj, end打印内容：
["/var/lib/dnf/system-upgrade/libteam-1.25-1.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/libmetalink-0.1.2-9.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/xfwm4-4.12.3-3.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/gnome-font-viewer-3.20.2-1.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/jzlib-1.1.3-4.fc24.noarch.rpm", "/var/lib/dnf/system-upgrade/libetonyek-0.1.6-4.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/perl-File-Path-2.12-2.fc24.noarch.rpm", "/var/lib/dnf/system-upgrade/alsa-plugins-pulseaudio-1.1.1-1.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/python-lxml-3.4.4-4.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/libreport-2.7.2-1.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/libffado-2.2.1-8.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/texlive-kastrup-svn15878.0-24.fc24.1.noarch.rpm", "/var/lib/dnf/system-upgrade/zenity-3.20.0-1.fc24.x86_64.rpm", "/var/lib/dnf/system-upgrade/texlive-fpl-svn15878.1.002-24.fc24.1.noarch.rpm", "/var/lib/dnf/system-upgrade/texlive-lib-2015-24.20150728_r37987.fc24.x86_64.rpm", "/var/lib/#结尾少了数组的结束符中括号 "]"Traceback (most recent call last): File "/bin/dnf", line 58, in <module> main.user_main(sys.argv[1:], exit_code=True) File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 174, in user_main errcode = main(args) File "/usr/lib/python3.5/site-packages/dnf/cli/main.py", line 60, in main return _main(base, args) File "/usr/lib/python3.5/site-packages/dnf/base.py", line 102, in __exit__ self.close() File "/usr/lib/python3.5/site-packages/dnf/base.py", line 283, in close self._tempfile_persistor.get_saved_tempfiles()) File "/usr/lib/python3.5/site-packages/dnf/persistor.py", line 483, in get_saved_tempfiles return self._get_json_db(self.db_path) File "/usr/lib/python3.5/site-packages/dnf/persistor.py", line 425, in _get_json_db default = json.loads(content) File "/usr/lib64/python3.5/json/__init__.py", line 319, in loads return _default_decoder.decode(s) File "/usr/lib64/python3.5/json/decoder.py", line 339, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib64/python3.5/json/decoder.py", line 356, in raw_decode obj, end = self.scan_once(s, idx)json.decoder.JSONDecodeError: Unterminated string starting at: line 1 column 122871 (char 122870)/usr/lib/python3.5/site-packages/dnf/base.py line 283:
279 if not self.conf.keepcache: 280 self._clean_packages(self._tempfiles) 281 if self._trans_success: 282 self._trans_tempfiles.update( 283 self._tempfile_persistor.get_saved_tempfiles()) 284 self._tempfile_persistor.empty() 285 if self._transaction.install_set: 286 self._clean_packages(self._trans_tempfiles) 287 else: 288 self._tempfile_persistor.tempfiles_to_add.update( 289 self._trans_tempfiles)问题文件在：/var/cache/dnf/tempfiles.json，不完整的json array
如果不想改动代码：可以修改/etc/dnf/dnf.conf,添加keepcache=True，使代码不进入if表达式
[main]
gpgcheck=1
installonly_limit=3
clean_requirements_on_remove=True
keepcache=True
解决完了，发现如下问答：
http://superuser.com/questions/1102636/dnf-displays-error-after-package-install-on-fedora
