you need to get a US Cites for export, with this CITES you have to apply for an import permit at the "Bundesamt für Naturschutz" in Bonn. You also have to state meticulously how the animals will be kept, and German laws are relentless, we have a so caled "minimum requirement law for keeping reptiles" which, for instance, forbids to keep them in racks, only terraria are permitted, and the size has to be 1 x .75 x .5 the size of the snake, i.e. for a grow up female python you need a terarium of 5 foot length &c.
there may be inspections by the local authorities, and depending on where you move you may require a permission to keep "dangerous" animals, and all pythons are classified as thus ... sorry mate, don't hold me responsible 