Error when changing the Python interpreter to Python 2

Description

I want to change the python interpreter to python2.However, an error occurred after setting.Specific steps are as follows: step 1.choose ‘Preference’ -> ‘Python interpreter’ step 2.change the python interpreter to python2 and click the button named ‘Apply’ or ‘OK’

Traceback

  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\preferences\configdialog.py", line 236, in button_clicked
    configpage.apply_changes()
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\preferences\configdialog.py", line 99, in apply_changes
    self.apply_callback()
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\preferences\configdialog.py", line 282, in <lambda>
    self.apply_settings(self.changed_options))
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\preferences\maininterpreter.py", line 257, in apply_settings
    change = self.python_executable_changed(executable)
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\preferences\maininterpreter.py", line 161, in python_executable_changed
    not self.warn_python_compatibility(pyexec)):
  File "C:\ProgramData\Anaconda3\lib\site-packages\spyder\preferences\maininterpreter.py", line 190, in warn_python_compatibility
    ) % (console_version, spyder_version), QMessageBox.Ok)
TypeError: not all arguments converted during string formatting

Versions

• Spyder version: 4.0.1
• Python version: 3.7.4
• Qt version: 5.12.2
• PyQt5 version: 5.12.1
• Operating System: Windows 7

Dependencies

atomicwrites >=1.2.0         :  1.3.0 (OK)
chardet >=2.0.0              :  3.0.4 (OK)
cloudpickle >=0.5.0          :  1.2.2 (OK)
diff_match_patch >=20181111  :  20181111 (OK)
intervaltree                 :  None (OK)
IPython >=4.0                :  7.8.0 (OK)
jedi =0.14.1                 :  0.14.1 (OK)
nbconvert >=4.0              :  5.6.0 (OK)
numpydoc >=0.6.0             :  0.9.1 (OK)
pexpect >=4.4.0              :  4.8.0 (OK)
pickleshare >=0.4            :  0.7.5 (OK)
psutil >=0.3                 :  5.6.3 (OK)
pygments >=2.0               :  2.4.2 (OK)
pylint >=0.25                :  2.4.2 (OK)
pyls >=0.31.2;<0.32.0        :  0.31.7 (OK)
zmq >=17                     :  18.1.0 (OK)
qdarkstyle >=2.7             :  2.8 (OK)
qtawesome >=0.5.7            :  0.6.0 (OK)
qtconsole >=4.6.0            :  4.6.0 (OK)
qtpy >=1.5.0                 :  1.9.0 (OK)
rtree >=0.8.3                :  0.9.3 (OK)
sphinx >=0.6.6               :  2.2.0 (OK)
spyder_kernels >=1.8.1;<2.0.0:  1.8.1 (OK)
watchdog                     :  None (OK)
cython >=0.21                :  0.29.13 (OK)
matplotlib >=2.0.0           :  3.1.1 (OK)
numpy >=1.7                  :  1.16.5 (OK)
pandas >=0.13.1              :  0.25.1 (OK)
scipy >=0.17.0               :  1.3.1 (OK)
sympy >=0.7.3                :  1.4 (OK)

[PrinceFPF]

@goanpeca Thank you very much. According to your suggestion, I have solved my doubts.

[PrinceFPF]

@goanpeca @dalthviz @ccordoba12 @maraigue Thank you very much for your help. According to your suggestions, I have temporarily switched the IDE environment to English. I look forward to future updates and fixes this BUG. I also look forward to spyder IDE getting better and better in the future.