244f2bd0f42761a6d21a29dc750ae37ebd031c71

 1diff --git a/autoswitch_virtualenv.plugin.zsh b/autoswitch_virtualenv.plugin.zsh
 2index 11a1c069abc5bee36915520973b453061837902f..c54a3532d50820bcd6238beee1abdcdf3911c2d4 100644
 3--- a/autoswitch_virtualenv.plugin.zsh
 4+++ b/autoswitch_virtualenv.plugin.zsh
 5@@ -413,5 +413,10 @@ function _autoswitch_startup() {
 6     check_venv
 7 }
 8 
 9-autoload -Uz add-zsh-hook
10-add-zsh-hook precmd _autoswitch_startup
11+if ! type "python" > /dev/null; then
12+    printf "WARNING: python binary not found on PATH.\n"
13+    printf "zsh-autoswitch-virtualenv plugin will be disabled.\n"
14+else
15+    autoload -Uz add-zsh-hook
16+    add-zsh-hook precmd _autoswitch_startup
17+fi
18diff --git a/tests/test_plugin.zunit b/tests/test_plugin.zunit
19index 506a8cf7d0a00d8dc017bb8cfe39ce5c2e89047f..cb6cdd5cc8bb4153b00820a8351ea90ed4736bff 100644
20--- a/tests/test_plugin.zunit
21+++ b/tests/test_plugin.zunit
22@@ -12,6 +12,43 @@
23     LANG=".UTF-8"
24 }
25 
26+@test 'disabled if python not in path' {
27+    # Fake type failing on checking python
28+    function type {
29+      if [[ "$1" == "python" ]]; then
30+        return 1;
31+      fi
32+    }
33+
34+    # use run the first time to capture output
35+    run load ../autoswitch_virtualenv.plugin.zsh
36+
37+    assert "$lines[1]" same_as "WARNING: python binary not found on PATH."
38+    assert "$lines[2]" same_as "zsh-autoswitch-virtualenv plugin will be disabled."
39+
40+    # use load the next time to check its loaded into hooks correctly
41+    load ../autoswitch_virtualenv.plugin.zsh
42+
43+    assert '_autoswitch_startup' not_in $precmd_functions
44+}
45+
46+@test 'enabled correctly' {
47+  function type {
48+    return 0
49+  }
50+
51+  # use run the first time to capture output
52+  run load ../autoswitch_virtualenv.plugin.zsh
53+
54+  assert "$output" is_empty
55+
56+  # use load the next time to check its loaded into hooks correctly
57+  load ../autoswitch_virtualenv.plugin.zsh
58+
59+  assert $output is_empty
60+  assert '_autoswitch_startup' in $precmd_functions
61+}
62+
63 @test 'correct version exported' {
64     unset AUTOSWITCH_DEFAULTENV
65     load ../autoswitch_virtualenv.plugin.zsh