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ENH: Allow Series.to_csv to ignore the index. #684

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ENH: Allow Series.to_csv to ignore the index. #684

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13 changes: 9 additions & 4 deletions pandas/core/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -601,11 +601,14 @@ def __str__(self):
def __iter__(self):
return iter(self.values)

def iteritems(self):
def iteritems(self, index=True):
"""
Lazily iterate over (index, value) tuples
"""
return izip(iter(self.index), iter(self))
if index:
return izip(iter(self.index), iter(self))
else:
return izip(iter(self))

iterkv = iteritems
if py3compat.PY3: # pragma: no cover
Expand Down Expand Up @@ -1969,18 +1972,20 @@ def from_csv(cls, path, sep=',', parse_dates=True):
df = DataFrame.from_csv(path, header=None, sep=sep, parse_dates=parse_dates)
return df[df.columns[0]]

def to_csv(self, path):
def to_csv(self, path, index=True):
"""
Write the Series to a CSV file

Parameters
----------
path : string or None
Output filepath. If None, write to stdout
index : bool, optional
Include the index as row names or not
"""
f = open(path, 'w')
csvout = csv.writer(f, lineterminator='\n')
csvout.writerows(self.iteritems())
csvout.writerows(self.iteritems(index))
f.close()

def dropna(self):
Expand Down