tools/examples: hardcode #!/usr/bin/python shebang
diff --git a/examples/tracing/urandomread.py b/examples/tracing/urandomread.py
index 80ea9de..319db2c 100755
--- a/examples/tracing/urandomread.py
+++ b/examples/tracing/urandomread.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python
 #
 # urandomread  Example of instrumenting a kernel tracepoint.
 #              For Linux, uses BCC, BPF. Embedded C.