pandas

DESCRIPTION

Attributes

DataFrame.index
DataFrame.columns

method	DataFrame	Series	Index	note
describe	O	O	X
head	O	O	X
unique	X	O	O
value_counts	O	O	O	Return a Series containing counts of unique rows
sort_values	O	O	O	by values (along either axis)
sort_index	O	O	X	by labels (along an axis)
isnull	O	O	O
notnull	O	O	O
astype	O	O	O
to_numpy	O	O	O	convert to NumPy array : values() 대체
argmax	X	O	O	Return row integer position -> iloc[]
idxmax	O	O	X	Return label -> loc[]
isin	O	O	O	완전 일치 -> boolean_mask df.isin(values) : df 값들이 values 중에 있는지
str.contains	X	O	X	문자열 부분 일치(포함) -> boolean_mask Series.str.contains(pat) : pat 패턴이 Series 값에서 나타는지
str.split	X	O	X	-> Series, Index, DataFrame or MultiIndex of splitted str list
str.startswith	X	O	X	-> Series or Index of bool (boolean_mask)
apply	O	O	X	★apply a function along on axis(DataFrame)/values(Series) comparison : apply, applymap, map
applymap	O	X		★apply a function elementwise
map	X	O	O	★substitute each value with another value(elementwise)
sum	O	O	X	True=1 / False=0
iterrows	O	X	X	Iterate over DataFrame rows as (index, Series) pairs.