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[pre-commit.ci] auto fixes from pre-commit.com hooks

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pre-commit-ci[bot] 2024-11-21 01:26:02 +00:00
parent 2c279c492d
commit 521d7a23fa
1 changed files with 9 additions and 6 deletions
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9
compression/ppm.py
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@ -4,6 +4,7 @@ from collections import defaultdict
# Description for the ppm algorithm can be found at https://en.wikipedia.org/wiki/Prediction_by_partial_matching # Description for the ppm algorithm can be found at https://en.wikipedia.org/wiki/Prediction_by_partial_matching
class PPMNode: class PPMNode:
def __init__(self) -> None: def __init__(self) -> None:
# Initialize a PPMNode with a dictionary for child nodes and a count of total occurrences # Initialize a PPMNode with a dictionary for child nodes and a count of total occurrences
@ -73,11 +74,13 @@ class PPM:
if symbol: if symbol:
decompressed_output.append(symbol) decompressed_output.append(symbol)
# Update the context with the newly decoded symbol # Update the context with the newly decoded symbol
context = (context + symbol)[-self.order:] # Keep the context within order context = (context + symbol)[
-self.order :
] # Keep the context within order
else: else:
break # Stop if a symbol cannot be found break # Stop if a symbol cannot be found
return ''.join(decompressed_output) # Join the list into a single string return "".join(decompressed_output) # Join the list into a single string
def decode_symbol(self, context: str, prob: float) -> str | None: def decode_symbol(self, context: str, prob: float) -> str | None:
# Decode a symbol from the given context based on the probability # Decode a symbol from the given context based on the probability
@ -98,7 +101,7 @@ class PPM:
def read_file(file_path: str) -> str: def read_file(file_path: str) -> str:
"""Read the entire file and return its content as a string.""" """Read the entire file and return its content as a string."""
with open(file_path, 'r') as f: with open(file_path, "r") as f:
return f.read() return f.read()