DEV Community: MOMO

Answer: How to maximize browser window using puppeteer?

MOMO — Sat, 06 Jun 2020 19:08:12 +0000

Feb 18 '20

This works fine for me.

await puppeteer.launch({ 
      headless: false,
      defaultViewport: null,
      args: ['--start-maximized'] 
});

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Answer: How to avoid being detected as bot on Puppeteer and Phantomjs?

MOMO — Sat, 06 Jun 2020 18:55:17 +0000

Jan 25 '19

Things that can help in general :

Headers should be similar to common browsers, including
- User-Agent : use a recent one (see https://developers.whatismybrowser.com/useragents/explore/), or better, use a random recent one if you make multiple requests (see https://github.com/skratchdot/random-useragent)
- Accept-Language : something like "en,en-US;q=0,5" (adapt for your…

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How I can Run Multiple Node js Files ?

MOMO — Sat, 06 Jun 2020 14:26:42 +0000

Hi, I am new to node.js I have question about how to run mulitple files at once.
let's say I have scripts_1.js and scripts_2.js
How can I run the both at the same time.
I know I can do this node scripts_1.js && scripts_2.js but the problem is that I need to wait for scripts_1 to finish so scripts_2.js can run.

I tried bash scripts
start.sh

start node "scripts_1.js"
start node "scripts_2.js"

but I don't like it I need a better way.
any one can help.
Thanks in advance

Answer: Puppeteer - scroll down until you can't anymore

MOMO — Sat, 06 Jun 2020 13:49:03 +0000

answer re: Puppeteer - scroll down until you can't anymore

Nov 28 '18

Give this a shot:

const puppeteer = require('puppeteer');

(async () => {
    const browser = await puppeteer.launch({
        headless: false
    });
    const page = await browser.newPage();
    await page.goto('https://www.yoursite.com');
    await page.setViewport({
        width: 1200,
        height: 800
    });

    await autoScroll(page);

    await page.screenshot({
        path: 'yoursite.png',
        fullPage: true
    });

    await browser.close();
})();

async function autoScroll(page){
    await

…

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Answer: Loading .crx into remote chrome Selenium python

MOMO — Fri, 05 Jun 2020 21:57:48 +0000

answer re: Loading .crx into remote chrome Selenium python

May 10 '16

Here is an example to add an extension with Chrome with a remote server:

from selenium import webdriver

options = webdriver.ChromeOptions()
options.add_extension(r'C:\Downloads\Adblock-Plus_v1.11.crx')

capabilities = options.to_capabilities()
capabilities.update({'browser_version': '50.0', 'os': 'Windows', 'os_version': '10', 'resolution': '1366x768'})

driver = webdriver.Remote("http://127.0.0.1:4444/wd/hub", desired_capabilities=capabilities)
driver.get('http://stackoverflow.com/')

Note that it is preferable to set the Log level to WARNING…

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Answer: How do I pause my shell script for a second before continuing?

MOMO — Fri, 05 Jun 2020 16:00:20 +0000

Feb 7 '14

2055

Use the sleep command.

Example:

sleep .5 # Waits 0.5 second.
sleep 5  # Waits 5 seconds.
sleep 5s # Waits 5 seconds.
sleep 5m # Waits 5 minutes.
sleep 5h # Waits 5 hours.
sleep 5d # Waits 5 days.

One can also employ decimals when specifying a time…

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Answer: Run python SCRIPT on multiple browsers at the same time using selenium

MOMO — Fri, 05 Jun 2020 15:04:29 +0000

answer re: Run python SCRIPT on multiple browsers at the same time using selenium

Apr 26 '17

You could create multiple instances of the webdriver. You can then manipulate each individually. For example,

from selenium import webdriver
driver1 = webdriver.Chrome()
driver2 = webdriver.Chrome()
driver1.get("http://google.com")
driver2.get("http://yahoo.com")

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Answer: In a Bash script, how can I exit the entire script if a certain condition occurs?

MOMO — Fri, 05 Jun 2020 15:04:00 +0000

answer re: In a Bash script, how can I exit the entire script if a certain condition occurs?

Sep 4 '09

810

Try this statement:

exit 1

Replace 1 with appropriate error codes. See also Exit Codes With Special Meanings.

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Answer: How do I put a variable inside a string?

MOMO — Fri, 05 Jun 2020 13:32:12 +0000

answer re: How do I put a variable inside a string?

Jun 3 '10

483

Oh, the many, many ways...

String concatenation:

plot.savefig('hanning' + str(num) + '.pdf')

Conversion Specifier:

plot.savefig('hanning%s.pdf' % num)

Using local variable names:

plot.savefig('hanning%(num)s.pdf' % locals()) # Neat trick

Using str.format():

plot.savefig('hanning{0}.pdf'.format(num)) # Note: This is the new preferred way

Using f-strings:

plot.savefig(f'hanning{num}.pdf') # added in Python 3.6

Using string.Template:

…

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Answer: selenium count elements of xpath

MOMO — Fri, 05 Jun 2020 10:34:18 +0000

answer re: selenium count elements of xpath

Sep 13 '17

Use find_elements_by_xpath to get number of relevant elements

count = len(driver.find_elements_by_xpath(xpath))

Then click on the last element:

elem = driver.find_element_by_xpath(xpath[count])
elem.click()

Notice: the find_elements_by_xpath is plural in first code snippet

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Answer: XQuery negate regex

MOMO — Fri, 05 Jun 2020 10:01:39 +0000

answer re: XQuery negate regex

Oct 24 '15

Just use this pure XPath 2.0 expression (XPath 2.0 is a proper subset of XQuery):

("2a2", "32", "1234", "12", "32a3", "12345", "")
                      [not(matches(., "^[0-9]{4}$"))]

When this expression is evaluated (in XQuery, XSLT 2+ or any standalone XPath/XQuery interpreter tool), the wanted, correct result is produced:

2a2 32 12 32a3

…

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XQuery negate regex

MOMO — Fri, 05 Jun 2020 10:01:03 +0000

XQuery negate regex

Oct 7 '15 Comments: 6 Answers: 2

Im searching for a way to negate a regular expression in xquery Using Oracle with the XMLQuery function.

Ill give an example first:

XMLQuery(
    'for $number in ("2a2", "32", "1234", "12", "32a3", "")
    where ora:matches($number,"^[0-9]{4}$")

    return xs:integer($number)'
    passing xml RETURNING CONTENT
    )

this works perfect except one thing. I want…

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