I can't install cp2kdata using pip or from source

[diaojiaz]

I can't install cp2kdata using pip or from source。
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x151ea3c472d0>: Failed to establish a new connection: [Errno 101] Network is unreachable')':
Any advice?

[robinzyb]

It is network problem... Please check your network