diff --git a/.bashrc.kuba b/.bashrc.kuba
index b3b7cfb..7fd4b26 100755
--- a/.bashrc.kuba
+++ b/.bashrc.kuba
@@ -24,6 +24,32 @@ alias ls='ls --color=auto'
 # Define a OS X-like open command
 open() { command xdg-open "$@" > /dev/null 2>&1 & }
 
+# Inspect .npz files
+npz_py_str="$(cat << EOM
+from sys import argv
+
+class Wrap:
+    def __init__(self, fname):
+        import numpy as np
+        n = np.load(fname, allow_pickle=True)
+        files = n.files
+        print('Contains files', files)
+        for f in files:
+            setattr(self, f, n[f])
+
+d = Wrap(argv[1])
+EOM
+)"
+
+npz_preview() {
+    if [ $# -lt 1 ]; then
+        echo "Please specify file to open as argument"
+        return
+    fi
+
+    python -ic "$npz_py_str" "$1"
+}
+
 # Source git prompt
 source_existing ~/scripts/git-prompt.sh
 source_existing ~/.bash_prompt.kuba