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Optimize beginner python script about substring replacement


Optimize beginner python script about substring replacement

By : Cloud Manager Suppor
Date : November 22 2020, 03:01 PM
I wish this help you How about this, for an introductory Python class. There are several example words at the top; just change the comments #.
Instead of checking for "p" on every step, I check for the beginning of a vowel sequence. This sequence will always be terminated by "p". That's the only case where you don't want to append the character to the solution; instead you want to skip to the end of the vowel sequence.
code :
word = "poopoo-poopoo"
# word = "poopooh"
# word = "hijipijinks"
# word = "apapepe"
# word = "copovfepefepe"
vowels = ('a', 'e', 'i', 'o', 'u')
position = 0
solution = ""
vowel_count = 0   # consecutive vowels
while position < len(word):
    c = word[position]
    if vowel_count > 0:
        if c == 'p':
            position += vowel_count + 1
            vowel_count = 0
            continue
        vowel_count += 1
    else:
        if c in vowels:
            vowel_count = 1
    solution += c
    position += len(c)

print(solution)


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In Python, how do I do a string replacement AND retrive the replaced substring?

In Python, how do I do a string replacement AND retrive the replaced substring?


By : Marzio Forte
Date : March 29 2020, 07:55 AM
hop of those help? Python does not simultaneously return a match and a substitution. Calling group(0) on a returned Match object will find the matched substring:
code :
>>> r=re.compile('(b+)')
>>> r.search('abbbc')
<_sre.SRE_Match object at 0x7f04af497af8>
>>> r.search('abbbc').group(0)
'bbb'
>>> r.sub('z', 'abbbc')
'azc'
Beginner Python: How to Reduce Number of Lists in and Optimize Following Program

Beginner Python: How to Reduce Number of Lists in and Optimize Following Program


By : TamasK
Date : March 29 2020, 07:55 AM
I hope this helps you . The example data you post isn't long enough for it to take a long time.
You can profile your program by doing:
code :
python2.6 -m cProfile ./your_program.py
def compare(x, y):
    return not set(x).isdisjoint(set(y))
Python Substring replacement

Python Substring replacement


By : xav967
Date : March 29 2020, 07:55 AM
Hope that helps You're iterating through the string, which isn't doing what you'd expect. Iterating through a string goes through each character.
All you need to do is:
code :
mainstr = '"Name:xxx","age":"{This":"has to","be":"replaced"}","dept":"cse"'
substr = '{This":"has to","be":"replaced"}'
print "Output = ", mainstr.replace(substr, 'checked')
#                ^ The comma here is important.
Perform a substring replacement in a single line in Python

Perform a substring replacement in a single line in Python


By : 钟德鸣
Date : March 29 2020, 07:55 AM
Does that help I'm reading in MAC addresses on my LAN using the arp -a command and parsing the output. On OS X, some MAC addresses are returned with hex values lacking leading zeros. I've figured out how to insert the leading zeros using regex:
code :
>>> mac = '8:AA:C:3:ED:E'
>>> print ':'.join([i.zfill(2) for i in mac.split(':')])
08:AA:0C:03:ED:0E
>>> def fix_mac_adr(adr):
        return ':'.join([i.zfill(2) for i in adr.split(':')])
>>> fix_mac_adr('8:AA:C:3:ED:E')
'08:AA:0C:03:ED:0E'
>>> fix_mac_adr = lambda adr: ':'.join([i.zfill(2) for i in adr.split(':')])
(beginner) How can I optimize this script?

(beginner) How can I optimize this script?


By : Valentina Di noi
Date : August 25 2020, 02:00 PM
To fix the issue you can do So I'm really new to this and lack any formal education, I've just been teaching myself as a hobby so I don't have an understanding of what I'm trying to accomplish or the terminology to look up the answer on my room. Allow me to explain. , here's a quick (and totally untested) solution to your problem:
code :
#!/bin/sh

iface="$1"
apmac="E0:22:03:C6:85:F5"
destmac="34:15:13:4C:0B:D6"

# query some info on the selected interface, but discard the results
# we are only interested in the exit code of `ip`
if ip addr show "${iface}" >/dev/null
then
  airmon-ng start ${iface}
  # after 3 seconds, send a SIGINT:
  timeout -s INT 3s airodump-ng --bssid "{apmac}" -c11 "${iface}mon"
  # after 5 minutes, send a SIGINT:
  timeout -s INT 5m aireplay-ng -0 0 -a "${apmac}" -c "${destmac}" -x 1 "${iface}mon"
fi
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