Created

Embed URL

HTTPS clone URL

SSH clone URL

You can clone with HTTPS or SSH.

Download Gist
View pandas_datetime_error.py
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
from datetime import datetime, timedelta
from pandas import *
 
s = Series(date_range('2012-1-1', periods=3, freq='D'))
s
# Out[52]:
# 0 2012-01-01 00:00:00
# 1 2012-01-02 00:00:00
# 2 2012-01-03 00:00:00
 
td = Series([ timedelta(days=i) for i in range(3) ])
td
# Out[53]:
# 0 0:00:00
# 1 1 day, 0:00:00
# 2 2 days, 0:00:00
 
df = DataFrame(dict(A = s, B = td))
df
# Out[54]:
# A B
# 0 2012-01-01 00:00:00 0:00:00
# 1 2012-01-02 00:00:00 1 day, 0:00:00
# 2 2012-01-03 00:00:00 2 days, 0:00:00
 
df['C'] = df['A'] + df['B']
# ---------------------------------------------------------------------------
# TypeError Traceback (most recent call last)
# <ipython-input-65-7057e174d79e> in <module>()
# ----> 1 df['C'] = df['A'] + df['B']
 
# /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas/core/series.pyc in wrapper(self, other)
# 91 if self.index.equals(other.index):
# 92 name = _maybe_match_name(self, other)
# ---> 93 return Series(wrap_results(na_op(lvalues, rvalues)),
# 94 index=self.index, name=name)
# 95
 
# /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas/core/series.pyc in na_op(x, y)
# 63 if isinstance(y, np.ndarray):
# 64 mask = notnull(x) & notnull(y)
# ---> 65 result[mask] = op(x[mask], y[mask])
# 66 else:
# 67 mask = notnull(x)
 
# TypeError: ufunc add cannot use operands with types dtype('<M8[ns]') and dtype('O')
 
s - s.max()
# ---------------------------------------------------------------------------
# AttributeError Traceback (most recent call last)
# <ipython-input-66-8d53e24db927> in <module>()
# ----> 1 s - s.max()
 
# /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas/core/series.pyc in wrapper(self, other)
# 78
# 79 if (com.is_datetime64_dtype(self) and
# ---> 80 com.is_datetime64_dtype(other)):
# 81 lvalues = lvalues.view('i8')
# 82 rvalues = rvalues.view('i8')
 
# /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pandas/core/common.pyc in is_datetime64_dtype(arr_or_dtype)
# 1003 tipo = arr_or_dtype.type
# 1004 else:
# -> 1005 tipo = arr_or_dtype.dtype.type
# 1006 return issubclass(tipo, np.datetime64)
# 1007
 
# AttributeError: 'Timestamp' object has no attribute 'dtype'
 
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.