Adds a uopen function able to open transparently a local or a remote

file compressed or not

python/obitools3/files/universalopener.pxd

@@ -0,0 +1,5 @@
+#cython: language_level=3
+
+from .uncompress cimport CompressedFile
+
+cpdef CompressedFile uopen(str name, mode=?)

python/obitools3/files/universalopener.pyx

@@ -0,0 +1,23 @@
+#cython: language_level=3
+
+'''
+Created on 25 mars 2016
+
+@author: coissac
+'''
+
+from urllib.request import urlopen
+
+
+cpdef CompressedFile uopen(str name, mode='r'):
+    cdef CompressedFile c
+    
+    try:
+        f = urlopen(name)
+    except ValueError:
+        f = open(name,mode) 
+        
+    c = CompressedFile(f)
+    
+    return c
+