我有一个pandas数据框对象。我想从现有列的子字符串创建新列。我的数据如下：
Date variable want1 want2 want3
0 02-01-08 Australia - Sydney - A Australia Sydney A
1 03-01-08 Australia - Sydney - A Australia Sydney A
2 04-01-08 Australia - Sydney - A Australia Sydney A
3 05-01-08 Canada - Toronto - B Canada Toronto B
4 06-01-08 Canada - Toronto - B Canada Toronto B
其中want1 to want3是我需要的。
答案 0 :(得分：3)
您可以使用pd.Series.str.split：
df[['want1', 'want2', 'want3']] = df['variable'].str.split(' - ', expand=True)
答案 1 :(得分：1)
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\ameet\AppData\Local\go-build
set GOEXE=.exe
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=F:\OneDrive\Projects\gows
set GORACE=
set GOROOT=C:\Go
set GOTMPDIR=
set GOTOOLDIR=C:\Go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\ameet\AppData\Local\Temp\go-
build874557962=/tmp/go-build -gno-record-gcc-switches
F:\OneDrive\Projects\gows\src\hello>cat hello.go
package main
import "fmt"
func main() {
fmt.Printf("hello, world\n")
}
F:\OneDrive\Projects\gows\src\hello>go build hello.go
can't load package: package main: cannot find package "." in:
F:\OneDrive\Projects\gows\src\hello