Too many python installations. Should i remove them all and install the latest?

[Νικόλαος Κούρας]

root at nikos [~]# yum remove python3
Loaded plugins: fastestmirror
Setting up Remove Process
No Match for argument: python3
Loading mirror speeds from cached hostfile
 * base: ftp.plusline.de
 * extras: ftp.plusline.de
 * updates: ftp.plusline.de
base                                                                                                                          | 3.7 kB     00:00     
extras                                                                                                                        | 3.5 kB     00:00     
updates                                                                                                                       | 3.4 kB     00:00     
updates/primary_db                                                                                                            | 2.6 MB     00:00     
vz-base                                                                                                                       |  951 B     00:00     
vz-updates                                                                                                                    |  951 B     00:00     
No Packages marked for removal
root at nikos [~]# yum remove python3.3
Loaded plugins: fastestmirror
Setting up Remove Process
No Match for argument: python3.3
Loading mirror speeds from cached hostfile
 * base: ftp.plusline.de
 * extras: ftp.plusline.de
 * updates: ftp.plusline.de
No Packages marked for removal
root at nikos [~]# 


i don'y understand, why didnt it removed it neither of ways?