14.8 Are all tortoiseshell cats female?

Our DataFrame contains cats of many colours. Here’s some Python to print the colour codes in eight neat columns:

colours = sorted(df["Colour"].unique())

for count, colour in enumerate(colours, start=1):
    print(f"{colour:<9}", end=("\n" if count % 8 == 0 else ""))

AGOUTI   AMB      APR      APRWHI   BEIBLA   BEIGE    BEIWHI   BLAAPR
BLABRI   BLABRO   BLACK    BLACRE   BLAGIN   BLAGRE   BLAORA   BLATAN
BLATOR   BLAWHI   BLONDE   BLUBI    BLUCRE   BLUE     BLUEP    BLUGRE
BLUMIT   BLUSPO   BLUTAB   BLUTOR   BLUWHI   BONE     BRIBRO   BRIGRE
BRIND    BROBEI   BROBLA   BROCRE   BROGRE   BROMER   BROSPOT  BROTAB
BROWHI   BROWN    BRSPTAB  CALI     CHAMP    CHAR     CHARTAB  CHAWHI
CHMWHI   CHOC     CHOCP    CHOCRE   CHOWHI   CINN     CREAM    CREAPOI
CREBEI   CREBRO   CREGIN   CREGRE   CREWHI   DKGREY   DTORT    FAWN
GINBLA   GINBRO   GINGER   GINTAB   GINWHI   GOLD     GREBLA...