Feature/save charts with User Defined Path

[amjadraza]

PR related to #271 . Below is the example to use.

import pandas as pd
import os
from data.sample_dataframe import dataframe

from pandasai import PandasAI
from pandasai.llm.openai import OpenAI

df = pd.DataFrame(dataframe)

llm = OpenAI()

user_defined_path = os.getcwd()
pandas_ai = PandasAI(llm, save_charts=True,
                     save_charts_path=user_defined_path,
                     verbose=True)
response = pandas_ai(
    df,
    "Plot the histogram of countries showing for each the gpd,"
    " using different colors for each bar",
)
# Output: check out $pwd/exports/charts/{hashid}/chart.png

• closes Save charts to folder specified by user #271
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.

[jonbiemond]

Looks great! I reviewed the save_charts related features and had a couple thoughts.

[jonbiemond]

exports/ can already be found on line 34.

[amjadraza]

Noted. However, it was not working for my Directory.

[jonbiemond]

That's surprising. It's formatted according to the docs: https://git-scm.com/docs/gitignore

[amjadraza]

@jonbiemond addressed all your concerns.

3. added pandasai.__version__ : Reading version from pyproject.toml file