Python3的PIP安装了Python2脚本，如何使其在Python3环境运行？

Got it, let's work through this issue together. That SyntaxError about missing parentheses in print is a dead giveaway—this script was built exclusively for Python 2, where print was a statement instead of a function (which requires parentheses in Python 3). Here are three reliable ways to get it working on your Windows 10 Python 3 setup:

1. Use Python's Official 2to3 Tool to Auto-Convert Syntax #

This is the most straightforward method since it handles most Python 2 → 3 syntax changes automatically:

• First, locate the source code folder of ever2simple. Since you installed it via Miniconda, it's probably in ...\Miniconda3\Lib\site-packages\ever2simple (look for a folder with .py files inside).
• Open your Command Prompt or Anaconda Prompt, navigate to that folder with:

  cd "C:\Path\To\Miniconda3\Lib\site-packages\ever2simple"
  

• Run the 2to3 tool with the -w flag to write changes directly to the files:

  2to3 -w .
  

  This will update all print statements to use parentheses, convert xrange to range, fix exception handling syntax (like except Error, e → except Error as e), and more.
• After conversion, try running ever2simple.exe again—it should now work with Python 3.

2. Create a Python 2 Virtual Environment (No Code Changes Needed) #

If you'd rather not modify the script, you can run it in a dedicated Python 2 environment (note: Python 2 is no longer supported, so use this only for legacy scripts):

• Create a new conda environment with Python 2.7:

  conda create -n py27 python=2.7
  

• Activate the environment:

  conda activate py27
  

• Install ever2simple in this environment:

  pip install -U ever2simple
  

• Run the script from this activated environment—it will use Python 2 and avoid the syntax error entirely.

3. Manually Update the Script's Syntax #

If you prefer to tweak the code yourself (great for learning or small scripts):

• Find all .py files in the ever2simple source folder (mentioned in method 1).
• Open each file and replace every Python 2-style print statement:
  • Change print 'File does not exist: %s' % filepath → print('File does not exist: %s' % filepath)
  • Replace any other print statements without parentheses (e.g., print "Hello" → print("Hello"))
• Check for other Python 2-specific syntax:
  • Replace except Exception, e → except Exception as e
  • Replace xrange() → range()
• Save all changes, then run the script again.

内容的提问来源于stack exchange，提问作者trebi