Python Shell Workaround

Python Shell Workaround

When to Use This Skill

Use this pattern when execute_code_sandbox fails with Python code that requires external packages (like openpyxl, python-docx, pandas, etc.) that may not be available in the sandbox environment.

The Pattern

Instead of relying solely on execute_code_sandbox, use run_shell with inline Python commands as a fallback:

python3 -c "your python code here"

Step-by-Step Instructions

Step 1: Detect Sandbox Failure

Watch for errors like:

• ModuleNotFoundError for common packages
• Import errors for external libraries
• Sandbox environment limitations

Step 2: Convert Python Code to Shell Command

Transform your Python script into a one-liner or use a heredoc for longer scripts:

For simple code:

python3 -c "import openpyxl; wb = openpyxl.Workbook(); wb.save('file.xlsx')"

For complex code (using heredoc):

python3 << 'EOF'
import openpyxl
from openpyxl.utils import get_column_letter

wb = openpyxl.Workbook()
ws = wb.active
ws['A1'] = 'Header'
wb.save('output.xlsx')
print('File created successfully')
EOF

Step 3: Execute with run_shell

Use run_shell to execute the command:

tool: run_shell
command: python3 -c "import openpyxl; print('Package available')"

Step 4: Verify Output

Check the stdout/stderr from run_shell to confirm success, then proceed with subsequent steps.

Best Practices

1. Escape quotes properly: Use single quotes inside double-quoted strings or vice versa
2. Use heredocs for multiline code: Cleaner and easier to debug
3. Install packages if needed: Add pip install package before your Python command if packages are missing
4. Chain commands safely: Use && to ensure prerequisites succeed before running Python code

Example Scenarios

Creating Excel Files

python3 << 'EOF'
import openpyxl
from openpyxl.worksheet.datavalidation import DataValidation

wb = openpyxl.Workbook()
ws = wb.active
ws.title = "Data"

# Add headers
headers = ['Name', 'Email', 'Status']
for col, header in enumerate(headers, 1):
    ws.cell(row=1, column=col, value=header)

wb.save('output.xlsx')
EOF

Creating Word Documents

python3 -c "
from docx import Document
doc = Document()
doc.add_heading('Report', 0)
doc.save('report.docx')
print('Document created')
"

Limitations

• Complex multiline scripts are harder to maintain as one-liners
• Debugging is less convenient than in sandbox
• Some packages may still not be available in the shell environment

Related Patterns

• If packages are truly unavailable, consider installing them first: pip install package_name && python3 -c "..."
• For persistent scripts, write to a .py file first, then execute with python3 script.py