python oneliners

python-one-liners.sh

#!/usr/bin/env bash

### ALIAS ##########################################################################################

# Notes:
# Most aliases accept both standard input and command-line arguments
# Examples:
#     $ echo ':hello world' | urlquote
#     $ urlquote ':hello world'

echo 'hisa jlaskla' | python -c 'import sys,urllib.parse as ul; print(ul.quote_plus(ul.quote_plus(sys.argv[1] if len(sys.argv) > 1 else sys.stdin.read()[0:-1], "")))'

alias urlquote='python  -c "import sys,urllib.parse as ul; print(ul.quote_plus(ul.quote_plus(sys.argv[1] if len(sys.argv) > 1 else sys.stdin.read()[0:-1])))"'
alias json2yaml='python -c "import yaml,json,sys; print(yaml.dump(json.load(sys.stdin)))"'
alias htmldecode='python -c "import html,sys; [print(html.unescape(l), end=\"\") for l in sys.stdin]"'
alias pyrandom='python -c "import random,sys; print(str(random.randint( int(sys.argv[1]) if len(sys.argv) > 2 else 0 , int(sys.argv[2]) if len(sys.argv) > 2 else int(sys.argv[1]) )))"'

python -c 'import sys,yaml,json; print(yaml.dump(json.loads(sys.stdin.read()), default_flow_style=False, sort_keys=False))'
python -c 'import sys,yaml,json; print(json.dumps(json.loads(sys.stdin.read()), sort_keys=False, indent=2))'
python -c 'import sys,yaml,json; print(json.dumps(yaml.load(sys.stdin.read(),Loader=yaml.FullLoader), sort_keys=False))'
python -c 'import sys,yaml,json; print(json.dumps(yaml.load(sys.stdin.read(),Loader=yaml.FullLoader), sort_keys=False, indent=2))'
python -c 'import sys,yaml,json; yaml.safe_load(sys.stdin.read())'
python -c 'import sys,json;json.loads(sys.stdin.read())'
python -c "import crypt; print(crypt.crypt(input('clear-text password: '), crypt.mksalt(crypt.METHOD_SHA512)))"
python -c 'import sys,urllib.request; f=urllib.request.urlopen(sys.stdin.read());  print(f.read().decode("utf-8"))'

### HTML ###########################################################################################

# unescape
echo '<h1 class="title">hello!<h1>' |
  python -c 'import html,sys;[print(html.unescape(i), end="") for i in sys.stdin]'

# escape
echo '<h1 class="title">hello!<h1>' |
  python -c 'import html,sys;[print(html.escape(i), end="") for i in sys.stdin]'

echo "https://nntrn.github.io/sshell" |
  python -c 'import sys,urllib.request; f=urllib.request.urlopen(sys.stdin.read());
  print(f.read().decode("utf-8"))'

### BASE64 #########################################################################################

python -m base64 -e <<<"sample string"
python -m base64 -d <<<"dGhpcyBpcyBlbmNvZGVkCg=="

#     $ python -m base64 -e <<<"sample string"
#     c2FtcGxlIHN0cmluZwo=
#
#     $ python -m base64 -d <<<"dGhpcyBpcyBlbmNvZGVkCg=="
#     sample string

### PRETTY PRINT ###################################################################################

curl -s "https://jsonplaceholder.typicode.com/posts" |
  python -c "import sys, json; data=json.load(sys.stdin); print([d['title'] for d in data])"
# python -c "import sys, json; print(json.load(sys.stdin)[0])"

python -c "import yaml,json,sys; print(yaml.dump(json.load(sys.stdin)))"

#    $ str='{"ice_cream_flavors": ["vanilla","chocolate","strawberry"]}'
#    $ echo $str | python -c "import yaml,json,sys; print(yaml.dump(json.load(sys.stdin)))"
#    ice_cream_flavors:
#    - vanilla
#    - chocolate
#    - strawberry

### DATA ENCRYPTION & DECRYPTION ###################################################################

# print certificates
python -m certifi -c

python -c 'import crypt; print(crypt.crypt("This is my Password", "$1$SomeSalt$"))'

python -c 'import hashlib,sys; print(hashlib.sha256(sys.stdin.read().encode()).hexdigest())'

#--------------------------------------------------------------------------------------------------#
#   $ python -c 'import crypt; print(crypt.crypt("This is my Password", "$1$SomeSalt$"))'
#   $1$SomeSalt$UqddPX3r4kH3UL5jq5/ZI.
#
#   $ echo -n "saltedpassword" | python -c "import sys; print(sys.stdin.read().encode())"
#   b'saltedpassword'
#
#   $ echo "..." | python -c 'import hashlib,sys; print(hashlib.sha256(sys.stdin.read().encode()).hexdigest())'
#   a00c3b59d5e9e2d8ad78e29258e13b5cf4807919ebb5a523c199e8da1cda91b9
#
#   $ python -c 'import base64,os;print(base64.encodebytes(os.urandom(32)).decode().rstrip())'
#   c1SIp1bkfiJHCxspNlnNN9PGifUpBUrSlwjsLhCL7dE=
#
#   $ python -c "import random,string; print(''.join(random.sample(string.ascii_letters, 25)))"
#   ZdQYvojmIHkablJBhLONUrqyE
#--------------------------------------------------------------------------------------------------#

python -c "import base64,os;print(base64.encodebytes(os.urandom(32)).decode().rstrip())"
python -c "import random,string; print(''.join(random.sample(string.ascii_letters, 25)))"

### CONVERTING DATA TYPES

# YAML TO JSON

alias yaml2json='python -c "import sys,yaml,json; print(json.dumps(yaml.safe_load( open(sys.argv[1]) if len(sys.argv) > 1 else sys.stdin )))"'

# USAGE:
#     $ cat file.yml | yaml2json
#     or
#     $ yaml2json file.yml

#--------------------------------------------------------------------------------------------------#
# JSON TO YAML
#--------------------------------------------------------------------------------------------------#
# Options:
#     default_style=None
#     default_flow_style=False
#     canonical=None
#     indent=None
#     width=None
#     allow_unicode=None
#     line_break=None
#     encoding=None
#     explicit_start=None
#     explicit_end=None
#     version=None
#     tags=None
#     sort_keys=True
#
#     # Flow style:
#     !!python/object/apply:models.Person [John, Doe]
#
#     # Block style:
#     !!python/object/apply:models.Person
#       - John
#       - Doe

cat file.json |
  python -c 'import sys,yaml,json; print(yaml.dump( json.loads(sys.stdin.read()) ))'
# or with options
cat file.json |
  python -c 'import sys,yaml,json; print(yaml.dump(json.loads(sys.stdin.read()), <OPTIONS-HERE> ))'

#     $ python -c "import yaml; print(yaml.dump([1,2,3], default_flow_style=False ))"
#     - 1
#     - 2
#     - 3
#
#     $ python -c "import yaml; print(yaml.dump([1,2,3], default_flow_style=True ))"
#     [1, 2, 3]
#
#     $ python -c "import yaml; print(yaml.dump([1,2,3], canonical=True ))"
#     ---
#     !!seq [
#       !!int "1",
#       !!int "2",
#       !!int "3",
#     ]

### SYSTEM #########################################################################################

python -m site
python -m site --user-site
python -m profile <(echo 'import this')

python -c "import site; print(site.getsitepackages())"

#    $ python -m site
#    sys.path = [
#        '/Users/annie/Library/Python/3.9',
#        '/Library/Frameworks/Python.framework/Versions/3.9/lib/python39.zip',
#        '/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9',
#        '/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/lib-dynload',
#        '/Users/annie/Library/Python/3.9/lib/python/site-packages',
#        '/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages',
#    ]
#    USER_BASE: '/Users/annie/Library/Python/3.9' (exists)
#    USER_SITE: '/Users/annie/Library/Python/3.9/lib/python/site-packages' (exists)
#    ENABLE_USER_SITE: True
#
#    $ python -m site --user-site
#    /Users/annie/Library/Python/3.9/lib/python/site-packages
#
#    $ python -c "import site; print(site.getsitepackages())"
#    ['/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages']

#    $ python -m profile <(echo 'import this' )
#           1253 function calls (1252 primitive calls) in 0.033 seconds
#
#     Ordered by: standard name
#
#     ncalls  tottime  percall  cumtime  percall filename:lineno(function)
#           1    0.000    0.000    0.006    0.006 11:1(<module>)
#           3    0.000    0.000    0.000    0.000 :0(__exit__)
#           1    0.000    0.000    0.000    0.000 :0(_fix_co_filename)
#           5    0.000    0.000    0.000    0.000 :0(acquire_lock)
#           2    0.000    0.000    0.000    0.000 :0(allocate_lock)
#         104    0.000    0.000    0.000    0.000 :0(chr)
#           1    0.000    0.000    0.000    0.000 :0(endswith)
#         2/1    0.000    0.000    0.006    0.006 :0(exec)
#           3    0.000    0.000    0.000    0.000 :0(extend)
#           3    0.000    0.000    0.000    0.000 :0(from_bytes)
#           3    0.000    0.000    0.000    0.000 :0(fspath)

### COMPRESSION ####################################################################################

DIR=directory_name
FILE=plain.txt

python -m zipfile -c $DIR.zip $DIR
python -m tarfile -c $FILE.tar $FILE

####################################################################################################

python -m pygments -g file.py