all: Rename "sys" module to "usys".

This is consistent with the other 'micro' modules and allows implementing
additional features in Python via e.g. micropython-lib's sys.

Note this is a breaking change (not backwards compatible) for ports which
do not enable weak links, as "import sys" must now be replaced with
"import usys".

4 files changed, 14 insertions, 5 deletions

diff --git a/tests/io/argv.py b/tests/io/argv.py
index 53254da11..834292504 100644
--- a/tests/io/argv.py
+++ b/tests/io/argv.py
@@ -1,3 +1,6 @@
-import sys
+try:
+    import usys as sys
+except ImportError:
+    import sys
 
 print(sys.argv)
diff --git a/tests/io/builtin_print_file.py b/tests/io/builtin_print_file.py
index 822356a6c..e5c20b64e 100644
--- a/tests/io/builtin_print_file.py
+++ b/tests/io/builtin_print_file.py
@@ -1,6 +1,9 @@
 # test builtin print function, using file= argument
 
-import sys
+try:
+    import usys as sys
+except ImportError:
+    import sys
 
 try:
     sys.stdout
diff --git a/tests/io/file_stdio.py b/tests/io/file_stdio.py
index cbdb07016..6c08f35d7 100644
--- a/tests/io/file_stdio.py
+++ b/tests/io/file_stdio.py
@@ -1,4 +1,7 @@
-import sys
+try:
+    import usys as sys
+except ImportError:
+    import sys
 
 print(sys.stdin.fileno())
 print(sys.stdout.fileno())
diff --git a/tests/io/resource_stream.py b/tests/io/resource_stream.py
index 5656205b6..b589ff99b 100644
--- a/tests/io/resource_stream.py
+++ b/tests/io/resource_stream.py
@@ -1,5 +1,5 @@
 import uio
-import sys
+import usys
 
 try:
     uio.resource_stream
@@ -11,5 +11,5 @@ buf = uio.resource_stream("data", "file2")
 print(buf.read())
 
 # resource_stream(None, ...) look ups from current dir, hence sys.path[0] hack
-buf = uio.resource_stream(None, sys.path[0] + "/data/file2")
+buf = uio.resource_stream(None, usys.path[0] + "/data/file2")
 print(buf.read())