"Pandas 컬럼명 변경"의 두 판 사이의 차이

2022년 1월 6일 (목) 20:01 기준 최신판

1 개요[ | ]

Pandas 컬럼명 변경
Pandas 변수명 변경

2 컬럼명 지정[ | ]

import pandas as pd
df = pd.read_csv("https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv")
df.head(2)

df.rename(columns={"sepal_length":"aaa","petal_length":"bbb"}, inplace=True)
df.head(2)

3 컬럼위치 지정[ | ]

import pandas as pd
df = pd.read_csv("https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv")
df.head(2)

df.rename(columns={df.columns[0]:"aaa",df.columns[2]:"bbb"}, inplace=True)
df.head(2)

4 전체 재설정[ | ]

import pandas as pd
df = pd.read_csv("https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv")
df.head(2)

df.columns = ['aaa','sepal_width','bbb','petal_width','species']
df.head(2)

5 같이 보기[ | ]

6 참고[ | ]

https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.rename.html

@@ 1번째 줄: / 1번째 줄: @@
 ==개요==
 ;Pandas 컬럼명 변경
+;Pandas 변수명 변경
-<syntaxhighlight lang='python'>
+==컬럼명 지정==
-df.rename({"이전이름1":"새이름1","이전이름2":"새이름2"}, axis=1, inplace=True)
+<syntaxhighlight lang='python' notebook>
+import pandas as pd
+df = pd.read_csv("https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv")
+df.head(2)
+</syntaxhighlight>
+<syntaxhighlight lang='python' notebook>
+df.rename(columns={"sepal_length":"aaa","petal_length":"bbb"}, inplace=True)
+df.head(2)
+</syntaxhighlight>
+==컬럼위치 지정==
+<syntaxhighlight lang='python' notebook=2>
+import pandas as pd
+df = pd.read_csv("https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv")
+df.head(2)
+</syntaxhighlight>
+<syntaxhighlight lang='python' notebook=2>
+df.rename(columns={df.columns[0]:"aaa",df.columns[2]:"bbb"}, inplace=True)
+df.head(2)
 </syntaxhighlight>
-==실행예시==
+==전체 재설정==
-<syntaxhighlight lang='python' notebook>
+<syntaxhighlight lang='python' notebook=3>
 import pandas as pd
 df = pd.read_csv("https://raw.githubusercontent.com/mwaskom/seaborn-data/master/iris.csv")
 df.head(2)
 </syntaxhighlight>
-<syntaxhighlight lang='python' notebook>
+<syntaxhighlight lang='python' notebook=3>
-df.rename({"sepal_length":"aaa","petal_length":"bbb"}, axis=1, inplace=True)
+df.columns = ['aaa','sepal_width','bbb','petal_width','species']
 df.head(2)
 </syntaxhighlight>
 ==같이 보기==
+* [[Pandas columns]]
 * [[Pandas 컬럼 삭제]]
+* [[R 컬럼명 변경]]
 ==참고==