I installed the Bitcoin wallet electrum using official tutorial command

"sudo pip install https://download.electrum.org/2.6.2/Electrum-2.6.2.tar.gz"

The installation completed successfully without any error reporting.

Then when I launch it,

Code:
electrum
Traceback (most recent call last):
  File "/usr/bin/electrum", line 72, in <module>
    check_imports()
  File "/usr/bin/electrum", line 46, in check_imports
    import aes
  File "/usr/lib/python3.4/site-packages/aes.py", line 643
    raise ValueError, emsg % keysize
                    ^
SyntaxError: invalid syntax
Any idea?