Commit Graph

4 Commits

Author SHA1 Message Date
Mohammad Mohtashim
7d92e9407b
Jinja2 validation changed to issue warnings rather than issuing exceptions. (#7161)
- Description: If their are missing or extra variables when validating
Jinja 2 template then a warning is issued rather than raising an
exception. This allows for better flexibility for the developer as
described in #7044. Also changed the relevant test so pytest is checking
for raised warnings rather than exceptions.
  - Issue: #7044 
  - Tag maintainer: @hwchase17, @baskaryan

---------

Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
2023-07-05 14:04:29 -04:00
engkheng
dbbc340f25
Validate input_variables when using jinja2 templates (#3140)
`langchain.prompts.PromptTemplate` and
`langchain.prompts.FewShotPromptTemplate` do not validate
`input_variables` when initialized as `jinja2` template.

```python
# Using langchain v0.0.144
template = """"\
Your variable: {{ foo }}
{% if bar %}
You just set bar boolean variable to true
{% endif %}
"""

# Missing variable, should raise ValueError
prompt_template = PromptTemplate(template=template, 
                                 input_variables=["bar"], 
                                 template_format="jinja2", 
                                 validate_template=True)

# Extra variable, should raise ValueError
prompt_template = PromptTemplate(template=template, 
                                 input_variables=["bar", "foo", "extra", "thing"], 
                                 template_format="jinja2", 
                                 validate_template=True)
```
2023-04-19 16:18:32 -07:00
Harrison Chase
786852e9e6
partial variables (#1308) 2023-02-28 08:40:35 -08:00
Harrison Chase
c02eb199b6
add few shot example (#148) 2022-11-19 20:32:45 -08:00