From 46b56049d4f0ac8c955046e0d68d01d0622159f1 Mon Sep 17 00:00:00 2001
From: Sarath Menon <sarathmenon@mailbox.org>
Date: Fri, 13 Sep 2024 12:41:23 +0200
Subject: [PATCH] make pandas optional

---
 calphy/postprocessing.py | 6 +++++-
 environment-nolammps.yml | 1 -
 environment.yml          | 1 -
 setup.py                 | 2 +-
 4 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/calphy/postprocessing.py b/calphy/postprocessing.py
index 29e24a3..5781839 100644
--- a/calphy/postprocessing.py
+++ b/calphy/postprocessing.py
@@ -1,6 +1,5 @@
 import os
 import numpy as np
-import pandas as pd
 
 def read_report(folder):
     """
@@ -39,6 +38,11 @@ def gather_results(mainfolder):
     df: pandas DataFrame
         DataFrame with results
     """
+    try:
+        import pandas as pd
+    except ImportError:
+        raise ImportError('Please install pandas to use this function')
+     
     datadict = {}
     datadict['mode'] = []
     datadict['status'] = []
diff --git a/environment-nolammps.yml b/environment-nolammps.yml
index 280f290..cc6d8a4 100644
--- a/environment-nolammps.yml
+++ b/environment-nolammps.yml
@@ -17,4 +17,3 @@ dependencies:
   - uncertainties  
   - pydantic >=2.3.0
   - pyscal3
-  - pandas
diff --git a/environment.yml b/environment.yml
index c2ceed7..3e164e3 100644
--- a/environment.yml
+++ b/environment.yml
@@ -16,4 +16,3 @@ dependencies:
   - uncertainties
   - pydantic >=2.3.0
   - pyscal3
-  - pandas
diff --git a/setup.py b/setup.py
index 2dde7dc..25c8b93 100644
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@
     description="free energy calculation for python",
     install_requires=['matplotlib', 'pytest',
     'pyyaml', 'mendeleev', 
-    'tqdm', 'scipy', 'pydantic', 'pyscal3', 'pandas'],
+    'tqdm', 'scipy', 'pydantic', 'pyscal3'],
     license="GNU General Public License v3",
     long_description=readme,
     long_description_content_type='text/markdown',