Refactor: Organize import order of modules according to PEP 8 guidelines

- Grouped standard library imports at the top
- Followed by third-party library imports
- Local application/library imports at the bottom

prepshot/_model/head_iteration.py

@@ -6,8 +6,10 @@
 
 import datetime
 import logging
+
 import numpy as np
 import pandas as pd
+
 import pyoptinterface as poi
 
 from prepshot.utils import interpolate_z_by_q_or_s

prepshot/load_data.py

@@ -4,11 +4,14 @@
 """This module contains functions for loading and processing data from JSON
 and Excel files.
 """
+
 import json
 import sys
 import logging
 from os import path
+
 import pandas as pd
+
 from prepshot.utils import calc_inv_cost_factor, calc_cost_factor
 
 

prepshot/output_data.py

@@ -5,9 +5,11 @@
 """
 
 import logging
+
 import numpy as np
 import xarray as xr
 import pandas as pd
+
 from prepshot.logs import timer
 
 

prepshot/solver.py

@@ -5,6 +5,7 @@
 """
 
 import logging
+
 import pyoptinterface as poi
 from pyoptinterface import mosek
 from pyoptinterface import gurobi

prepshot/utils.py

@@ -5,6 +5,7 @@
 """
 
 from itertools import product
+
 from scipy import interpolate
 
 def check_positive(*values):