In order to get the length of a clip in the MLT framework, I need to configure the mlt profile to 24fps like my clip. So I tried to do (python binding):
In [1]: import mlt
In [2]: mlt.Factory.init()
Out[2]: <mlt.Repository; proxy of <Swig Object of type 'Mlt::Repository *' at 0x7fffe6b78570> >
In [4]: profile = mlt.Profile()
In [5]: myprod = mlt.Producer(profile, "myfile.mp4")
In [6]: profile4 = mlt.Profile.from_producer(profile, myprod)
In [7]: profile4.fps()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
Input In [7], in <cell line: 1>()
----> 1 profile4.fps()
AttributeError: 'NoneType' object has no attribute 'fps'
Any idea what I'm doing wrong?
from_producer() does not return anything. I would expect you to use:
import mlt
mlt.Factory.init()
profile = mlt.Profile()
myprod = mlt.Producer(profile, "myfile.mp4")
profile.from_producer(myprod)
profile.fps()
Related
I'm using IBM Watson Discovery. I'm using python to craete a discovery query. I want to add passages.fields query parameter to get the passage out gf html instead of text. I've tried the below code:
import json
from ibm_watson import DiscoveryV2
from ibm_cloud_sdk_core.authenticators import CloudPakForDataAuthenticator
authenticator = IAMAuthenticator('xxxxx')
discovery = DiscoveryV2(
version='2020-08-30',
authenticator=authenticator
)
discovery.set_default_headers({'x-watson-learning-opt-out': "true"})
response = discovery.query(
project_id='xxxxx',
natural_language_query='zero',
passages.fields: "html"
).get_result()
However, I'm getting the below error:
File "<ipython-input-92-730c62f58ce1>", line 18
passages.fields: "html"
^
SyntaxError: invalid syntax
Any help please?
Thanks,
I'm trying to develop an autologin für Instagram and I got the following problem.
Here is my code:
from time import sleep
from selenium import webdriver
from selenium.webdriver.common.by import By
browser = webdriver.Firefox()
browser.implicitly_wait(5)
browser.get('https://www.instagram.com/')
sleep(2)
login_link = browser.find_element(By.XPATH,"//button[text()=´Allow essential and optional cookies`]")
Here is the Error Message:
Traceback (most recent call last): File "C:\Users\justu\PycharmProject\botinsta\main.py", line 18, in
login_link = browser.find_element(By.XPATH,"//button[text()=´Allow essential and optional cookies]") File "C:\Users\justu\PycharmProject\botinsta\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 857, in find_element return self.execute(Command.FIND_ELEMENT, { File "C:\Users\justu\PycharmProject\botinsta\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 435, in execute self.error_handler.check_response(response) File "C:\Users\justu\PycharmProject\botinsta\venv\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 247, in check_response raise exception_class(message, screen, stacktrace) selenium.common.exceptions.InvalidSelectorException: Message: Given xpath expression "//button[text()=´Allow essential and optional cookies]" is invalid: SyntaxError: Document.evaluate: The expression
is not a legal expression Stacktrace:
WebDriverError#chrome://remote/content/shared/webdriver/Errors.jsm:188:5
InvalidSelectorError#chrome://remote/content/shared/webdriver/Errors.jsm:348:5
find_#chrome://remote/content/marionette/element.js:320:11
element.find/</findElements<#chrome://remote/content/marionette/element.js:274:24
evalFn#chrome://remote/content/marionette/sync.js:136:7
PollPromise/<#chrome://remote/content/marionette/sync.js:156:5
PollPromise#chrome://remote/content/marionette/sync.js:127:10
element.find/<#chrome://remote/content/marionette/element.js:272:24
element.find#chrome://remote/content/marionette/element.js:271:10
findElement#chrome://remote/content/marionette/actors/MarionetteCommandsChild.jsm:245:25
receiveMessage#chrome://remote/content/marionette/actors/MarionetteCommandsChild.jsm:101:31
Can anyone help ?
Try single quotes
'Allow essential and optional cookies'
instead of
´Allow essential and optional cookies`
P.S. Since you use browser.implicitly_wait(5) there is no need in time.sleep(2)
You need to take care of a couple of things.
If you are passing the xpath within double quotes i.e. "..." then you need to provide the value of the attribues within single quotes i.e. '...'
<button> element is a clickable element. So you need to identify when the element is interactable.
Solution
Incorporating the above mentioned points and removing the sleep(2), your effective lines of code will be:
browser.get('https://www.instagram.com/')
login_link = WebDriverWait(browser, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[text()='Allow essential and optional cookies']")))
Note: You have to add the following imports :
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
I have been trying to web scrape hotel reviews but on multiple page jumps, the url of the webpage doesn't change. So I am using webdriver from selenium to work this out. It is not showing any error but on checking if the response status is 200, it is showing false. In addition to that, running the line of code which I have mentioned below generates an error. If anyone can fix the issue, effort will be highly appreciated!
!pip install selenium
from selenium import webdriver
import requests
from bs4 import BeautifulSoup
import pandas as pd
# install chromium, its driver, and selenium
!apt-get update
!apt install chromium-chromedriver
!cp /usr/lib/chromium-browser/chromedriver /usr/bin
# set options to be headless, ..
from selenium import webdriver
options = webdriver.ChromeOptions()
options.add_argument('--headless')
options.add_argument('--no-sandbox')
options.add_argument('--disable-dev-shm-usage')
# open it, go to a website, and get results
wd = webdriver.Chrome('chromedriver',options=options)
code = wd.get('https://www.goibibo.com/hotels/highland-park-hotel-in-trivandrum-1383427384655815037/?hquery={%22ci%22:%2220211209%22,%22co%22:%2220211210%22,%22r%22:%221-2-0%22,%22ibp%22:%22v15%22}&hmd=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&cc=IN&reviewType=gi&vcid=3877384277955108166&srpFilters={%22type%22:[%22Hotel%22]}')
str(code) == "<Response [200]>"
**Output: ** False
soup = BeautifulSoup(code.content,'html.parser')
On running the below line of code, there comes an error:
AttributeError Traceback (most recent call
last) in () ----> 1 soup
= BeautifulSoup(code.content,'html.parser')
AttributeError: 'NoneType' object has no attribute 'content'
get()
get(url: str) loads a web page in the current browser session and doesn't returns anything.
Hence, as per your code, code will be always NULL.
Solution
To validate the Response you can adopt any of the two approaches:
Using requests.head():
import requests
request_response = requests.head(https://www.goibibo.com/hotels/highland-park-hotel-in-trivandrum-1383427384655815037/?hquery={%22ci%22:%2220211209%22,%22co%22:%2220211210%22,%22r%22:%221-2-0%22,%22ibp%22:%22v15%22}&hmd=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&cc=IN&reviewType=gi&vcid=3877384277955108166&srpFilters={%22type%22:[%22Hotel%22]})
status_code = request_response.status_code
if status_code == 200:
print("URL is valid/up")
else:
print("URL is invalid/down")
Using urlopen():
import requests
import urllib
status_code = urllib.request.urlopen(https://www.goibibo.com/hotels/highland-park-hotel-in-trivandrum-1383427384655815037/?hquery={%22ci%22:%2220211209%22,%22co%22:%2220211210%22,%22r%22:%221-2-0%22,%22ibp%22:%22v15%22}&hmd=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&cc=IN&reviewType=gi&vcid=3877384277955108166&srpFilters={%22type%22:[%22Hotel%22]}).getcode()
if status_code == 200:
print("URL is valid/up")
else:
print("URL is invalid/down")
I'm using pydicom (installed with pip3, on python 3.7, using Idle) and I need to access pixel_array values.
I just copy-paste the example provided into the documentation and this leads to two errors:
first is about the get_testdata_files operation, which is not working because
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license()" for more information.
>>>
==================== RESTART: D:\OneDrive\Desktop\test.py ====================
None
Traceback (most recent call last):
File "D:\OneDrive\Desktop\test.py", line 8, in <module>
filename = get_testdata_files("bmode.dcm")[0]
IndexError: list index out of range
I have solved this not using this operation.
second is about the pixel_array and I'm not so able to decode what is wrong, but it seems like the pixel_array is not populated. However I'm able to access other fields in the dataset and the file can be displayed (using ImageJ for example).
==================== RESTART: D:\OneDrive\Desktop\test.py ====================
None
Filename.........: bmode.dcm
Storage type.....: 1.2.840.10008.5.1.4.1.1.3.1
Patient's name...: Femoral trombenarterectomy, Case Report:
Patient id.......: Case Report 1
Modality.........: US
Study Date.......: 20110824
Image size.......: 768 x 1024, 27472108 bytes
Slice location...: (missing)
Traceback (most recent call last):
File "D:\OneDrive\Desktop\test.py", line 38, in <module>
plt.imshow(dataset.pixel_array, cmap=plt.cm.bone)
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\pydicom\dataset.py", line 949, in pixel_array
self.convert_pixel_data()
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\pydicom\dataset.py", line 895, in convert_pixel_data
raise last_exception
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\pydicom\dataset.py", line 863, in convert_pixel_data
arr = handler.get_pixeldata(self)
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\pydicom\pixel_data_handlers\pillow_handler.py", line 188, in get_pixeldata
UncompressedPixelData.extend(decompressed_image.tobytes())
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\PIL\Image.py", line 746, in tobytes
self.load()
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\PIL\ImageFile.py", line 261, in load
raise_ioerror(err_code)
File "C:\Users\marcl\AppData\Local\Programs\Python\Python37\lib\site-packages\PIL\ImageFile.py", line 58, in raise_ioerror
raise IOError(message + " when reading image file")
OSError: broken data stream when reading image file
Here is my code:
import matplotlib.pyplot as plt
import sys
import pydicom
import numpy
from pydicom.data import get_testdata_files
print(__doc__)
#filename = get_testdata_files("bmode.dcm")[0]
filename = "bmode.dcm"
dataset = pydicom.dcmread(filename)
# Normal mode:
print()
print("Filename.........:", filename)
print("Storage type.....:", dataset.SOPClassUID)
print()
pat_name = dataset.PatientName
display_name = pat_name.family_name + ", " + pat_name.given_name
print("Patient's name...:", display_name)
print("Patient id.......:", dataset.PatientID)
print("Modality.........:", dataset.Modality)
print("Study Date.......:", dataset.StudyDate)
if 'PixelData' in dataset:
rows = int(dataset.Rows)
cols = int(dataset.Columns)
print("Image size.......: {rows:d} x {cols:d}, {size:d} bytes".format(
rows=rows, cols=cols, size=len(dataset.PixelData)))
if 'PixelSpacing' in dataset:
print("Pixel spacing....:", dataset.PixelSpacing)
# use .get() if not sure the item exists, and want a default value if missing
print("Slice location...:", dataset.get('SliceLocation', "(missing)"))
# plot the image using matplotlib
plt.imshow(dataset.pixel_array, cmap=plt.cm.bone)
plt.show()
Could you help me to solve these two errors and access pixel_array values?
Don't hesitate to give me some advices /remarks/...
Thanks!
Hi Marc welcome to SO!
Your first error means that the get_testdata_files returns an empty list, so your file is not found. Have a look at the pydicom source, it shows that a search is performed in [DATA_ROOT]/test_files. Is your file located in that path?
Your second error is related to PIL and that can be quite difficult to debug and fix. First try to read the pixel_array from a dataset created from one of the supplied test files. If that works, your problem is probably that PIL cannot handle the specific encoding of your image data. You want to install and use GDCM instead of PIL to see if that solves the problem. Another user has had a similar issue as you, GDCM solved the problem. It can be a bit of a headache to get working unfortunately. Or have a look at this page, it shows some other alternatives on viewing the image data.
I have the following code:
employees = Employee.all()
employees.projection('first_name')
employees.filter('passport_id =', passport_id)
employees.order('-added')
results = employees.fetch(5)
Second line is not allowed:
AttributeError: 'Query' object has no attribute 'projection'
Another approach also returns the error:
employees = db.Query(Employee, projection=('first_name'))
TypeError: __init__() got an unexpected keyword argument 'projection'
But if I read the doc correctly, it should be supported.
Which version of AppEngine SDK are you running? projection queries were added in version 1.6.5