https://eli.thegreenplace.net/2010/06/25/aes-encryption-of-files-in-python-with-pycrypto

#python #encryption #file_encryption #pycrypto #AES #IV #CBC

How to sort data based on a column in Pandas?

You can use sort_values in order to sort data in a dataframe:

df.sort_values(['credit'], ascending=False, inplace=True)

The above sample assumes that you have a data frame called df and sort it based on user credit. The sort order is Descending (ascending=False). and it sorts in place (You don't have to copy the result into a new dataframe).

#python #pandas #dataframe #sort #inplace

https://maktabkhooneh.org/course/387/chapters/1/unit/1/

#python #course #jadi #pro_python

How do you query is not null in MongoDB?

db.mycollection.find({ 'fieldname' : { $ne: null } });

#database #mongodb #query #ne #null #not_null

امشب شب ولادت سادات عالم است/ امشب شب عروسی زهرا و حیدر است
‌
امشب به عرش زمزمه شادی علی است/ امشب شب مبارک دامادی علی است

بنت اسد که بوده ملک دست بوس تو/ عیدی بده که فاطمه گشته عروس تو

https://techcrunch.com/2018/08/12/a-private-tesla-backed-by-saudi-arabia-might-not-be-as-far-fetched-as-you-think/

#news #elun #tesla

How to prepend a string to all file names in a directory in a bash script?

for f in *.py; do mv "$f" "old-$f"; done

The above one-line will loop over all files in current directory with .py extension and prepend old- into the files.

So for example a file with name main.py will be renamed to old-main.py

#python #bash #script #prepend #move #rename #for

How do you know if a remote web server is Linux based or Windows based? (Ignore this if there is pfsense/ha proxy in front)

ping the remote ip:

ping iranhost.com

The output is similar to:

PING iranhost.com (174.142.214.47): 56 data bytes
 64 bytes from 174.142.214.47: icmp_seq=0 ttl=105 time=174.379 ms
 64 bytes from 174.142.214.47: icmp_seq=1 ttl=105 time=180.315 ms
 64 bytes from 174.142.214.47: icmp_seq=2 ttl=105 time=177.937 ms

Look at the ttl part of the output. If it's above 100, it is a windows based machine otherwise it is a Linux based machine.


#os #linux #windows #ping #ttl #iranhost

🔺حمایت کم نظیر مردم ترکیه از پول کشورشان

🔹کاهش 13درصدی ارزش دلار نسبت به لیر از زمان شروع کمپین مردمی

Did you know that the below code returns True?

>>> bool("False")
 True

That's because False is a string and boolean of non-empty string is True. There are workarounds:

1- s == 'True'

Do not use this piece of code if you don't know what you're doing. Misusing this technic puts a mess in your code! Be cautious.

2- The other more elegant way is to use json library like below:

>>> import json
 >>> json.loads("false".lower())
 False
 >>> json.loads("True".lower())
 True

NOTE: you need to make it lower case in order to turn the string into a boolean value.

#python #boolean #true #false #cast #convert #bool

How to clone a database in MySQL?

mysqldump -u root db_name | mysql -u root new_db_name

NOTE: if it gets password provide -p to both commands.

#mysql #clone #copy #database #copy_database

https://www.youtube.com/playlist?list=PLGKQkV4guDKEv1DoK4LYdo2ZPLo6cyLbm

#python #threading #tutorial #course

#ebook #download #pdf #kafka

#ebook #pdf #kafka

How to use thousand separator in Python & Jinja2?

The python way is to use format as below:

'user credit is {:,}'.format(10000)

And in Jinja2 it is like the following line:

user credit is {{ '{0:,}'.format(user_credit | int) }}

#python #jinja2 #separator #thousand_separator

As you may know you can use capitalize to make the first letter of a word upper case. For example you can turn failed to Failed.

In Jinja2 you can use title to do the same job:

{{ "failed" | title }}

#python #jinja2 #filter #title #capitalize

https://chabokpush.com/

#push #notification