No, pip is case insensitive.
All comparisons of distribution names MUST be case insensitive, and MUST consider hyphens and underscores to be equivalent.
from PEP 426
Is PyPI case sensitive?
No, pip is case insensitive.
All comparisons of distribution names MUST be case insensitive, and MUST consider hyphens and underscores to be equivalent.
from PEP 426