update pep8

csst_cpic_sim/camera.py

@@ -786,7 +786,7 @@ class CpicVisEmccd(object):
         """
         if seed != -1:
             np.random.seed(seed)
-     
+
         expt = expt_set
         if expt_set == 0:
             expt = 0.001

csst_cpic_sim/config.py

@@ -99,6 +99,7 @@ update_able_keys = [
     'nsample', 'csst_format', 'output', 'check_fits_header'
 ]
 
+
 def replace_cpism_refdata(
         config: dict,
         output: str = '$') -> None: