allow `add_particles` to be called with empty numpy arrays i.e. injecting zero particles (#2808)

1 files changed, 0 insertions, 5 deletions

diff --git a/Python/pywarpx/_libwarpx.py b/Python/pywarpx/_libwarpx.py
index 8840ed37a..e6e0d0282 100755
--- a/Python/pywarpx/_libwarpx.py
+++ b/Python/pywarpx/_libwarpx.py
@@ -591,11 +591,6 @@ class LibWarpX():
         for key, val in kwargs.items():
             assert np.size(val)==1 or len(val)==maxlen, f"Length of {key} doesn't match len of others"
 
-        # --- If the length of the input is zero, then quietly return
-        # --- This is not an error - it just means that no particles are to be injected.
-        if maxlen == 0:
-            return
-
         # --- Broadcast scalars into appropriate length arrays
         # --- If the parameter was not supplied, use the default value
         if lenx == 1: