Check context arguments before comparison // Resolve #1000

2017-07-27 15:50:54 +03:00
parent 954357bdd2
commit 9994ed8b5e
1 changed files with 1 additions and 1 deletions
--- a/platformio/maintenance.py
+++ b/platformio/maintenance.py
@ -39,7 +39,7 @@ def in_silence(ctx=None):
    assert ctx
    ctx_args = ctx.args or []
    conditions = [
-        ctx.args[0] == "upgrade", "--json-output" in ctx_args,
+        ctx_args and ctx.args[0] == "upgrade", "--json-output" in ctx_args,
        "--version" in ctx_args
    ]
    return ctx_args and any(conditions)