https://github.com/tonybaloney/perflint - Python Linter for performance anti patterns.

• PERF101: Unnecessary list() on already iterable type (unnecessary-list-cast)
• PERF102: Incorrect iterator method for dictionary (incorrect-dictionary-iterator)
• PERF201: Loop invariant statement (loop-invariant-statement)
• PERF202: Global name usage in a loop (loop-global-usage)
• PERF203: Try..except blocks have a significant overhead. Avoid using them inside a loop (loop-try-except-usage)
• PERF204: Looped slicing of bytes objects is inefficient. Use a memoryview() instead (memoryview-over-bytes)
• PERF205: Importing the "%s" name directly is more efficient in this loop. (dotted-import-in-loop)
• PERF301: Use tuple instead of list for a non-mutated sequence. (use-tuple-over-list)
• PERF401: Use a list comprehension instead of a for-loop (use-list-comprehension)
• PERF402: Use a list copy instead of a for-loop (use-list-copy)
• PERF403: Use a dictionary comprehension instead of a for-loop (use-dict-comprehension)