The pysolar - python module.

Today I tested another python module named pysolar with python 2.7 and 3.6.2 versions.
You can read more about this python module here:
Pysolar is a collection of Python libraries for simulating the irradiation of any point on earth by the sun. It includes code for extremely precise ephemeris calculations and more.
Using pip under Windows OS to install this python module:

C:\Python27\Scripts>pip install pysolar
...
Successfully built pysolar
Installing collected packages: pysolar
Successfully installed pysolar-0.7

I try also with python 3.6.2 version:

C:\Python362\Scripts>pip install pysolar
Collecting pysolar
  Using cached pysolar-0.7.tar.gz
Installing collected packages: pysolar
  Running setup.py install for pysolar ... done
Successfully installed pysolar-0.7

Let's start with a simple example to calculate the angle between the sun and a plane tangent to the earth where
you are:

C:\Python362>python.exe
Python 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:57:36) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> from pysolar.solar import *
>>> import datetime
>>> my_data = datetime.datetime.now()
>>> print (my_data)
2017-08-10 18:12:01.997373
>>> get_altitude_fast(47.4616,26.3015,datetime.datetime.now())
-6.393190003993212

Let's try the scattering of light by the atmosphere, though it uses an
atmospheric model based on data taken in the United States:

>>> latitude_deg =47.2741
>>> longitude_deg = 26.185
>>> my_data = datetime.datetime.now()
>>> altitude_deg = get_altitude(latitude_deg, longitude_deg,my_data)
C:\Python362\lib\site-packages\pysolar\time.py:105: UserWarning: I don't know about leap seconds after 2015
  (leap_seconds_base_year + len(leap_seconds_adjustments) - 1)
>>> azimuth_deg = get_azimuth(latitude_deg, longitude_deg,  my_data)
>>> radiation.get_radiation_direct(my_data, altitude_deg)
634.4916522219954

About this issue:I don't know about leap seconds after 2015 read here.

Using Flask and Flask-WTF to build websites in Python 2.7 and 3.6.2 - part 002.

This is one update of my old tutorial about Flask and python 2.7 under Linux from here.
The default install of python 2.7 and pip is very simple - read this tutorial.
First, you need to install the Flask python module under Windows 10:

C:\Python27\Scripts>pip install Flask
Collecting Flask
Downloading Flask-0.11.1-py2.py3-none-any.whl (80kB)
100% |################################| 81kB 564kB/s
Collecting click>=2.0 (from Flask)
Downloading click-6.6-py2.py3-none-any.whl (71kB)
100% |################################| 71kB 1.3MB/s
Collecting Werkzeug>=0.7 (from Flask)
Downloading Werkzeug-0.11.11-py2.py3-none-any.whl (306kB)
100% |################################| 307kB 231kB/s
Collecting Jinja2>=2.4 (from Flask)
Downloading Jinja2-2.8-py2.py3-none-any.whl (263kB)
100% |################################| 266kB 890kB/s
Collecting itsdangerous>=0.21 (from Flask)
Downloading itsdangerous-0.24.tar.gz (46kB)
100% |################################| 51kB 1.3MB/s
Collecting MarkupSafe (from Jinja2>=2.4->Flask)
Downloading MarkupSafe-0.23.tar.gz
Installing collected packages: click, Werkzeug, MarkupSafe, Jinja2, itsdangerous
, Flask
Running setup.py install for MarkupSafe ... done
Running setup.py install for itsdangerous ... done
Successfully installed Flask-0.11.1 Jinja2-2.8 MarkupSafe-0.23 Werkzeug-0.11.11
click-6.6 itsdangerous-0.24

The simple example of the running Flask python module is one script named hello.py:

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello():
    return "Hello World!"

if __name__ == "__main__":
    app.run()

Using the command to run the script and show the result into your browser:

C:\Python27>python.exe hello.py
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

Now the installation of Flask-WTF python module:

C:\Python27\Scripts>pip install Flask-WTF
Collecting Flask-WTF
  Downloading Flask_WTF-0.14.2-py2.py3-none-any.whl
Collecting WTForms (from Flask-WTF)
  Downloading WTForms-2.1.zip (553kB)
    100% |################################| 563kB 1.7MB/s
Requirement already satisfied: Flask in c:\python27\lib\site-packages (from Flask-WTF)
Requirement already satisfied: click>=2.0 in c:\python27\lib\site-packages (from Flask->Flask-WTF)
Requirement already satisfied: Werkzeug>=0.7 in c:\python27\lib\site-packages (from Flask->Flask-WTF)
Requirement already satisfied: Jinja2>=2.4 in c:\python27\lib\site-packages (from Flask->Flask-WTF)
Requirement already satisfied: itsdangerous>=0.21 in c:\python27\lib\site-packages (from Flask->Flask-WTF)
Requirement already satisfied: MarkupSafe>=0.23 in c:\python27\lib\site-packages (from Jinja2>=2.4->Flask->Flask-WTF)
Installing collected packages: WTForms, Flask-WTF
  Running setup.py install for WTForms ... done
Successfully installed Flask-WTF-0.14.2 WTForms-2.1

Now I try with Python 3.6.2 with both python modules and works great.

C:\Python362\Scripts>pip3.6.exe install flask
...
Successfully installed Jinja2-2.9.6 MarkupSafe-1.0 Werkzeug-0.12.2 click-6.7 flask-0.12.2 itsdangerous-0.24

C:\Python362\Scripts>Flask-WTF
'Flask-WTF' is not recognized as an internal or external command,
operable program or batch file.

C:\Python362\Scripts>pip3.6.exe install Flask-WTF
...
Successfully installed Flask-WTF-0.14.2 WTForms-2.1

The gtts python module.

This python module named gtts will create an mp3 file from spoken text via the Google TTS (Text-to-Speech) API.
The installation of the gtts python module under Windows 10.

C:\Python27\Scripts>pip install gtts
Collecting gtts
  Downloading gTTS-1.2.0.tar.gz
Requirement already satisfied: six in c:\python27\lib\site-packages (from gtts)
Requirement already satisfied: requests in c:\python27\lib\site-packages (from gtts)
Collecting gtts_token (from gtts)
  Downloading gTTS-token-1.1.1.zip
Requirement already satisfied: chardet<3 .1.0="">=3.0.2 in c:\python27\lib\site-packages (from requests->gtts)
Requirement already satisfied: certifi>=2017.4.17 in c:\python27\lib\site-packages (from requests->gtts)
Requirement already satisfied: idna<2 .6="">=2.5 in c:\python27\lib\site-packages (from requests->gtts)
Collecting urllib3<1 .22="">=1.21.1 (from requests->gtts)
  Using cached urllib3-1.21.1-py2.py3-none-any.whl
Installing collected packages: gtts-token, gtts, urllib3
  Running setup.py install for gtts-token ... done
  Running setup.py install for gtts ... done
  Found existing installation: urllib3 1.22
    Uninstalling urllib3-1.22:
      Successfully uninstalled urllib3-1.22
Successfully installed gtts-1.2.0 gtts-token-1.1.1 urllib3-1.21.1

Let's see a basic example:

from gtts import gTTS
import os
import pygame.mixer
from time import sleep
 
user_text=input("Type your text: ")
 
translate=gTTS(text=user_text ,lang='en')
translate.save('output.wav')

pygame.mixer.init()
path_name=os.path.realpath('output.wav')
real_path=path_name.replace('\\','\\\\')
pygame.mixer.music.load(open(real_path,"rb"))
pygame.mixer.music.play()
while pygame.mixer.music.get_busy():
    sleep(1)

The text will be taken by input into a user_text variable.
You need to type the text into quotes also you will get an error.
The result will be one audio file named output.wav and play it by pygame python module.
This uses the default voices for all languages. I don't find a way to change this voices with python.

Fix Gimp with python script.

Today I will show you how python language can help GIMP users.
From my point of view, Gimp does not properly import frames from GIF files.
This program imports GIF files in this way:

Using the python module, you can get the correct frames from the GIF file.
Here's my script that uses the python PIL module.

import sys
from PIL import Image, ImageSequence
try:
        img = Image.open(sys.argv[1])
except IOError:
        print "Cant load", infile
        sys.exit(1)

pal = img.getpalette()
prev = img.convert('RGBA')
prev_dispose = True
for i, frame in enumerate(ImageSequence.Iterator(img)):
    dispose = frame.dispose

    if frame.tile:
        x0, y0, x1, y1 = frame.tile[0][1]
        if not frame.palette.dirty:
            frame.putpalette(pal)
        frame = frame.crop((x0, y0, x1, y1))
        bbox = (x0, y0, x1, y1)
    else:
        bbox = None

    if dispose is None:
        prev.paste(frame, bbox, frame.convert('RGBA'))
        prev.save('result_%03d.png' % i)
        prev_dispose = False
    else:
        if prev_dispose:
            prev = Image.new('RGBA', img.size, (0, 0, 0, 0))
        out = prev.copy()
        out.paste(frame, bbox, frame.convert('RGBA'))
        out.save('result_%03d.png' % i)

Name the python script with convert_gif.py and then you can use it on the GIF file as follows:

C:\Python27>python.exe convert_gif.py 0001.gif

The final result has a smaller number of images than in Gimp, but this was to be expected.

About py-translate python module.

This python module is used for translating text in the terminal.
You can read and see examples with this API on this web page.
Features

• Fast! Translate an entire book in less than 5 seconds.
• Made for Python 3 but still works on Python 2
• Fast and easy to install, easy to use
• Supports translation from any language
• Highly composable interface, the power of Unix pipes and filters.
• Simple API and documentation

Installation 

C:\>cd Python27

C:\Python27>cd Scripts

C:\Python27\Scripts>pip install py-translate
Collecting py-translate
  Downloading py_translate-1.0.3-py2.py3-none-any.whl (61kB)
    100% |################################| 61kB 376kB/s
Installing collected packages: py-translate
Successfully installed py-translate-1.0.3

C:\Python27\Scripts>

Let's test it with a simple example:

>>> import translate
>>> dir(translate)
['TestLanguages', 'TestTranslator', '__author__', '__build__', '__builtins__', '__copyright__', '__doc__', '__file__', '__license__', '__name__', '__package__', '__path__', '__title__', '__version__', 'accumulator', 'coroutine', 'coroutines', 'languages', 'print_table', 'push_url', 'set_task', 'source', 'spool', 'tests', 'translation_table', 'translator', 'write_stream']
>>> from translate import translator
>>> translator('ro', 'en', 'Consider ca dezvoltarea personala este un pas important')
[[[u'I think personal development is an important step', u'Consider ca dezvoltarea personala este un pas important', None, None, 0]], None, u'ro']
>>>