langchain/tests/unit_tests/test_python.py
KullTC 64596b23b9
Return output of PythonAstREPLTool when falling back to exec() (#2780)
When the code ran by the PythonAstREPLTool contains multiple statements
it will fallback to exec() instead of using eval(). With this change, it
will also return the output of the code in the same way the
PythonREPLTool will.
2023-04-12 21:22:46 -07:00

114 lines
2.7 KiB
Python

"""Test functionality of Python REPL."""
import sys
import pytest
from langchain.python import PythonREPL
from langchain.tools.python.tool import PythonAstREPLTool, PythonREPLTool
_SAMPLE_CODE = """
```
def multiply():
print(5*6)
multiply()
```
"""
_AST_SAMPLE_CODE = """
```
def multiply():
return(5*6)
multiply()
```
"""
_AST_SAMPLE_CODE_EXECUTE = """
```
def multiply(a, b):
return(5*6)
a = 5
b = 6
multiply(a, b)
```
"""
def test_python_repl() -> None:
"""Test functionality when globals/locals are not provided."""
repl = PythonREPL()
# Run a simple initial command.
repl.run("foo = 1")
assert repl.locals is not None
assert repl.locals["foo"] == 1
# Now run a command that accesses `foo` to make sure it still has it.
repl.run("bar = foo * 2")
assert repl.locals is not None
assert repl.locals["bar"] == 2
def test_python_repl_no_previous_variables() -> None:
"""Test that it does not have access to variables created outside the scope."""
foo = 3 # noqa: F841
repl = PythonREPL()
output = repl.run("print(foo)")
assert output == "name 'foo' is not defined"
def test_python_repl_pass_in_locals() -> None:
"""Test functionality when passing in locals."""
_locals = {"foo": 4}
repl = PythonREPL(_locals=_locals)
repl.run("bar = foo * 2")
assert repl.locals is not None
assert repl.locals["bar"] == 8
def test_functionality() -> None:
"""Test correct functionality."""
chain = PythonREPL()
code = "print(1 + 1)"
output = chain.run(code)
assert output == "2\n"
def test_functionality_multiline() -> None:
"""Test correct functionality for ChatGPT multiline commands."""
chain = PythonREPL()
tool = PythonREPLTool(python_repl=chain)
output = tool.run(_SAMPLE_CODE)
assert output == "30\n"
def test_python_ast_repl_multiline() -> None:
"""Test correct functionality for ChatGPT multiline commands."""
if sys.version_info < (3, 9):
pytest.skip("Python 3.9+ is required for this test")
tool = PythonAstREPLTool()
output = tool.run(_AST_SAMPLE_CODE)
assert output == 30
def test_python_ast_repl_multi_statement() -> None:
"""Test correct functionality for ChatGPT multi statement commands."""
if sys.version_info < (3, 9):
pytest.skip("Python 3.9+ is required for this test")
tool = PythonAstREPLTool()
output = tool.run(_AST_SAMPLE_CODE_EXECUTE)
print(output)
assert output == 30
def test_function() -> None:
"""Test correct functionality."""
chain = PythonREPL()
code = "def add(a, b): " " return a + b"
output = chain.run(code)
assert output == ""
code = "print(add(1, 2))"
output = chain.run(code)
assert output == "3\n"