Fix more code formatting issues

Author: vanandrew

nibabel/benchmarks/bench_fileslice.py

@@ -109,6 +109,6 @@ def my_table(title, times, base):
             with InTemporaryDirectory():
                 zst_times, zst_base = run_slices('data.zst', repeat)
             my_table('zst slice - raw (ratio)',
-                    np.dstack((zst_times, zst_times / zst_base)),
-                    zst_base)
+                     np.dstack((zst_times, zst_times / zst_base)),
+                     zst_base)
     sys.stdout.flush()

nibabel/loadsave.py

@@ -23,6 +23,7 @@
 if HAVE_ZSTD:  # If pyzstd installed., add .zst suffix
     _compressed_suffixes = (*_compressed_suffixes, '.zst')
 
+
 def load(filename, **kwargs):
     r""" Load file given filename, guessing at file type
 

nibabel/openers.py

@@ -46,6 +46,7 @@
 except ImportError:
     HAVE_ZSTD = False
 
+
 def _gzip_open(filename, mode='rb', compresslevel=9, keep_open=False):
 
     # use indexed_gzip if possible for faster read access.  If keep_open ==

nibabel/volumeutils.py

@@ -19,7 +19,7 @@
 import numpy as np
 
 from .casting import shared_range, OK_FLOATS
-from .openers import Opener, BZ2File, IndexedGzipFile
+from .openers import Opener, BZ2File, IndexedGzipFile, HAVE_ZSTD
 from .deprecated import deprecate_with_version
 from .externals.oset import OrderedSet
 
@@ -41,11 +41,10 @@
 COMPRESSED_FILE_LIKES = (gzip.GzipFile, BZ2File, IndexedGzipFile)
 
 # Enable .zst support if pyzstd installed.
-try:
-    from pyzstd import ZstdFile
+if HAVE_ZSTD:
+    from .openers import ZstdFile
     COMPRESSED_FILE_LIKES = (*COMPRESSED_FILE_LIKES, ZstdFile)
-except ImportError:
-    pass
+
 
 class Recoder(object):
     """ class to return canonical code(s) from code or aliases