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-rw-r--r--numpy/lib/io.py7
1 files changed, 5 insertions, 2 deletions
diff --git a/numpy/lib/io.py b/numpy/lib/io.py
index 41ffc51b8..5348866c4 100644
--- a/numpy/lib/io.py
+++ b/numpy/lib/io.py
@@ -312,7 +312,10 @@ def loadtxt(fname, dtype=float, comments='#', delimiter=None, converters=None,
"""
user_converters = converters
-
+
+ if usecols is not None:
+ usecols = list(usecols)
+
if _string_like(fname):
if fname.endswith('.gz'):
import gzip
@@ -373,7 +376,7 @@ def loadtxt(fname, dtype=float, comments='#', delimiter=None, converters=None,
# By preference, use the converters specified by the user
for i, conv in (user_converters or {}).iteritems():
if usecols:
- i = usecols.find(i)
+ i = usecols.index(i)
converters[i] = conv
# Parse each line, including the first