#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
"""The MIT License (MIT)
import unicodedata
import warnings
from itertools import zip_longest
-from typing import Any, Callable, Dict, Iterable, List, Optional, Sequence, Tuple
+from typing import (
+ Any,
+ Callable,
+ Dict,
+ Iterable,
+ List,
+ Literal,
+ Optional,
+ Sequence,
+ Tuple,
+)
from uuid import uuid4
import list_utils
ESCAPE_SEQUENCE_RE = re.compile(r"\e\[[^A-Za-z]*[A-Za-z]")
NUM_SUFFIXES = {
- "Pb": (1024 ** 5),
- "P": (1024 ** 5),
- "Tb": (1024 ** 4),
- "T": (1024 ** 4),
- "Gb": (1024 ** 3),
- "G": (1024 ** 3),
- "Mb": (1024 ** 2),
- "M": (1024 ** 2),
- "Kb": (1024 ** 1),
- "K": (1024 ** 1),
+ "Pb": (1024**5),
+ "P": (1024**5),
+ "Tb": (1024**4),
+ "T": (1024**4),
+ "Gb": (1024**3),
+ "G": (1024**3),
+ "Mb": (1024**2),
+ "M": (1024**2),
+ "Kb": (1024**1),
+ "K": (1024**1),
}
return from_char_list(chars)
+def scramble(in_str: str) -> str:
+ return shuffle(in_str)
+
+
def strip_html(in_str: str, keep_tag_content: bool = False) -> str:
"""
Remove html code contained into the given string.
"""
Parses a date string. See DateParser docs for details.
"""
- import dateparse.dateparse_utils as dp # type: ignore
+ import dateparse.dateparse_utils as du
try:
- d = dp.DateParser()
+ d = du.DateParser() # type: ignore
d.parse(in_str)
return d.get_date()
- except dp.ParseException:
+ except du.ParseException: # type: ignore
msg = f'Unable to parse date {in_str}.'
logger.warning(msg)
return None
import dateparse.dateparse_utils as dp
try:
- d = dp.DateParser()
+ d = dp.DateParser() # type: ignore
_ = d.parse(in_str)
return True
- except dp.ParseException:
+ except dp.ParseException: # type: ignore
msg = f'Unable to parse date {in_str}.'
logger.warning(msg)
return False
import dateparse.dateparse_utils as dp
try:
- d = dp.DateParser()
+ d = dp.DateParser() # type: ignore
dt = d.parse(in_str)
- if type(dt) == datetime.datetime:
+ if isinstance(dt, datetime.datetime):
return dt
except ValueError:
msg = f'Unable to parse datetime {in_str}.'
return ret
-class SprintfStdout(object):
+def strip_ansi_sequences(in_str: str) -> str:
+ """Strips ANSI sequences out of strings.
+
+ >>> import ansi as a
+ >>> s = a.fg('blue') + 'blue!' + a.reset()
+ >>> len(s) # '\x1b[38;5;21mblue!\x1b[m'
+ 18
+ >>> len(strip_ansi_sequences(s))
+ 5
+ >>> strip_ansi_sequences(s)
+ 'blue!'
+
+ """
+ return re.sub(r'\x1b\[[\d+;]*[a-z]', '', in_str)
+
+
+class SprintfStdout(contextlib.AbstractContextManager):
"""
A context manager that captures outputs to stdout.
self.recorder.__enter__()
return lambda: self.destination.getvalue()
- def __exit__(self, *args) -> None:
+ def __exit__(self, *args) -> Literal[False]:
self.recorder.__exit__(*args)
self.destination.seek(0)
- return None # don't suppress exceptions
+ return False
def capitalize_first_letter(txt: str) -> str:
for second in second_list:
# Disallow there're/where're. They're valid English
# but sound weird.
- if (first == 'there' or first == 'where') and second == 'a(re)':
+ if (first in ('there', 'where')) and second == 'a(re)':
continue
pattern = fr'\b({first})\s+{second}\b'
# Column specs map input lines' columns into outputs.
# [col1, col2...]
for spec in column_specs:
- chunk = ''
+ hunk = ''
for n in spec:
- chunk = chunk + delim + input_lines[n]
- chunk = chunk.strip(delim)
- out.append(chunk)
+ hunk = hunk + delim + input_lines[n]
+ hunk = hunk.strip(delim)
+ out.append(hunk)
return out
# Column specs map input lines' columns into outputs.
# "key", [col1, col2...]
for spec in column_specs:
- chunk = ''
+ hunk = ''
for n in spec[1]:
- chunk = chunk + delim + input_lines[n]
- chunk = chunk.strip(delim)
- out[spec[0]] = chunk
+ hunk = hunk + delim + input_lines[n]
+ hunk = hunk.strip(delim)
+ out[spec[0]] = hunk
return out
b'1, 2, 3'
"""
- if type(x) is str:
+ if isinstance(x, str):
return x.encode('ascii')
- if type(x) is bytes:
+ if isinstance(x, bytes):
return x
raise Exception('to_ascii works with strings and bytes')
if not is_ip_v4(txt):
print(f"not IP: {txt}")
return None
- return tuple([int(x) for x in txt.split('.')])
+ return tuple(int(x) for x in txt.split('.'))
def path_ancestors_before_descendants_sort_key(volume: str) -> Tuple[str, ...]:
['/usr', '/usr/local', '/usr/local/bin']
"""
- return tuple([x for x in volume.split('/') if len(x) > 0])
+ return tuple(x for x in volume.split('/') if len(x) > 0)
def replace_all(in_str: str, replace_set: str, replacement: str) -> str:
return in_str
+def replace_nth(in_str: str, source: str, target: str, nth: int):
+ """Replaces the nth occurrance of a substring within a string.
+
+ >>> replace_nth('this is a test', ' ', '-', 3)
+ 'this is a-test'
+
+ """
+ where = [m.start() for m in re.finditer(source, in_str)][nth - 1]
+ before = in_str[:where]
+ after = in_str[where:]
+ after = after.replace(source, target, 1)
+ return before + after
+
+
if __name__ == '__main__':
import doctest
projects / python_utils.git / blobdiff