v0.5.8 release

docs/index.rst

@@ -37,6 +37,10 @@ Monty is tested to work on Python 2.7 and 3.x.
 Latest Change Log
 =================
 
+v0.5.8
+------
+1. Fix reverse read file for gzipped files.:
+
 v0.5.7
 ------
 1. Added a reverse_readfile method in monty.io, which is faster than

monty/__init__.py

@@ -7,7 +7,7 @@
 
 __author__ = 'Shyue Ping Ong'
 __copyright__ = 'Copyright 2014, The Materials Virtual Lab'
-__version__ = '0.5.7'
+__version__ = '0.5.8'
 __maintainer__ = 'Shyue Ping Ong'
 __email__ = '[email protected]'
 __date__ = 'Oct 5 2014'

monty/io.py

@@ -76,14 +76,18 @@ def reverse_readfile(filename):
     """
     try:
         with zopen(filename, "r+b") as f:
-            fm = mmap.mmap(f.fileno(), 0)
+            if isinstance(f, gzip.GzipFile):
+                for l in reversed(f.readlines()):
+                    yield l.rstrip()
+            else:
+                fm = mmap.mmap(f.fileno(), 0)
+                n = len(fm)
+                while n > 0:
+                    i = fm.rfind("\n", 0, n)
+                    yield fm[i + 1:n].strip("\n")
+                    n = i
     except ValueError:
         return
-    n = len(fm)
-    while n != -1:
-        i = fm.rfind("\n", 0, n)
-        yield fm[i + 1:n].strip("\n")
-        n = i
 
 
 def reverse_readline(m_file, blk_size=4096, max_mem=4000000):

setup.py

@@ -7,7 +7,7 @@
 setup(
     name="monty",
     packages=find_packages(),
-    version="0.5.7",
+    version="0.5.8",
     install_requires=[],
     extras_require={"yaml": ["pyyaml>=3.1"],},
     package_data={},