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No module named parse #8

Description

@Cappuccinuo

Situation: I want to start a blockchain node

Action: sudo python blockchain.py -p 5000

Result:

Traceback (most recent call last):
  File "blockchain.py", line 33, in <module>
    from urllib.parse import urlparse
ImportError: No module named parse

Attemption:
pip install parse(install success, does not solve problem)
pip install urllib(No matching distribution found for urllib)
pip install urlparse(No matching distribution found for urlparse)

Solution:
In blockchain.py, change
from urllib.parse import urlparse
to
from urlparse import urlparse

Could you please tell me the reason why we cannot import urlparse from urllib.parse?

And I wonder if we can only execute all the command like create node, start the blockchain client under root? As it notify me "cannot import Crypto" when I type python blockchain_client.py without sudo.

Thanks.

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