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python BeautifulSoup

Duquan

Upon request:

print(soup.find('div', 'b-comment__user'))

produces such a result

<div class="b-comment__user">
<a href="http://pikabu.ru/profile/EndlessSpace"><span class="">EndlessSpace</span></a>
<span>отправлено</span>
<time class="b-comment__time" datetime="1347413239">1215 дней назад</time>
</div>

And what kind of team should be to give only: EndlessSpace?

A
amarantha last edited by
Use the method. .select♪ It allows for the search of elements with the help of the CSS-designators.
```
print([e.string for e in soup.select("div.b-comment__user a span")])
```
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I can only point out the first mistake: the offset doesn't exist at the time you try to call him. He needs to be declared empty in front of the place where you call him, so if you have an exception, you're already filled with zero AC offset.
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It is a round error. Read this page. https://docs.python.org/ja/3.7/tutorial/floatingpoint.html
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Try this:portfel['Дата поворота'] = portfel['Дата поворота'].dt.strftime("%Y.%m.%d") Consider that after this transformation you won't be able to work with the data as with the dates, it's the lines now.
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I think it's an algorithm of rapid grading, a complex average. O(nlogn)at worst. O(n^2)In the worst case, the smallest or largest element is selected as a backbone and the mass will be divided each time into a length of 1 and n-1.Average mass logn once (i.e., about half) and each division has an examination of all elements more or less.also advise as a backbone to select an accidental element or an average of any kind in case of a partially dispersed mass
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Probably misleading the way to the file. Just take the audio to the same place as the program. And instead of pygame.mixer.Sound.play(bs1) bs1.play()
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sql is written correctly. You may transmit the name that is not in the table adminTG_category. Try writing your name = 'vas9' instead of ?purchase.price = cursor.fetchone() finish.print(purchase.price) and make sure sql works.
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self._nota = self.nota_media() self._avaliacoes = [] You're calling nota_media() before even initializing _avaliacoes. That way when you fall into the condition if not self._avaliacoes, an exception is released, for self._avaliacoes does not exist yet.If in addition to checking if the list is empty, you also wanted to check if _avaliacoes already exists, should use if not hasattr(self, '_avaliacoes') or not self._avaliacoes:
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module = __import__(config["pagedir"].replace("/", ".") + params["id"], fromlist=True) print module.page
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Your error is simpler than it seems: You did not put a condition where the variable continuar turn False, so the code is repeating infinitely.To solve I added the line continuar = False after running all your internal loops.There were also some mistakes (like the statement of global paginas inside of a for with which it would make it reset to each loop), identification problems outside the Python standard, etc.In the end, the following code worked straight:from bs4 import BeautifulSoup import requests page_index = 1 index = 0 continuar = True link = 'https://www.amazon.com.br/s?k=acer+nitro+5&rh=n%3A16364755011&s=price-asc-rank&dc&__mk_pt_BR=%C3%85M%C3%85%C5%BD%C3%95%C3%91&qid=1625947439&rnid=18726358011&ref=sr_nr_n_1' site = requests.get(f'{link}&page={page_index}') print("Notebooks gamer Acer nitro 5:\n\n") #a-pagination while continuar: site_bs4 = BeautifulSoup(site.text, 'html.parser') items = site_bs4.findAll('div', class_="s-expand-height s-include-content-margin s-latency-cf-section {{ " "borderCssClass }}") div_paginas = site_bs4.find('div', class_='a-text-center') paginacao = div_paginas.find_all('li', class_='a-last') if (paginacao): global paginas for pagina in paginacao: paginas = pagina.find('a') if(index == len(items)): if(paginas): site = requests.get(f'https://www.amazon.com.br/{paginas["href"]}') for item in items: index += 1 print(index) titulo = item.find('span', class_ = 'a-size-base-plus a-color-base a-text-normal') url = item.find('a', class_='a-link-normal a-text-normal') preco = item.find('span', class_='a-price-whole') #preco = items.find('a', class_='a-size-base a-link-normal a-text-normal') if(preco): print(f'Produto: {titulo.text}') print(f'https://www.amazon.com.br/{url["href"]}') print(f'Preço: R${preco.text.replace(",", "")}') else: print(f'Produto não disponível: {titulo.text}...\nDa url: https://www.amazon.com.br/{url["href"]}') print("\n") continuar = False print('\nLista acabada!')
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That's it.new_list = [item for sublist in main_list for item in sublist] Same thing:new_list = [] for sublist in main_list: for item in sublist: new_list.append(item) And when you put a file object in the cycle, it starts irritating. And the file object returns the lines from the file.This is where you cross the lines from the file, but you return to every line. 1 and eventually sum a generator consisting of 1 The size in the number of lines in the file.So this is:sum(1 for line in open('file', 'r')) can be seen as:num = 0 for line in open('file', 'r'): num += 1 PS.Can anyone tell me? Or tell me to read something. issues are dealt with in detail.There's a whole story about these kinds of chips, for example, in the Habre: https://habr.com/post/421993/ https://habr.com/post/336160/
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from bs4 import BeautifulSoup as bs s = '<a class="drug__link drug__link--article" href="//www.rlsnet.ru/fg_index_id_642.htm">Средства для лечения <span class="sokr" title="вирус иммунодефицита человека">ВИЧ</span>-инфекции в комбинациях</a>' soup = bs(s, "lxml") out_string = ''.join([x.text for x in soup.findAll('a')]) print(out_string) #### Средства для лечения ВИЧ-инфекции в комбинациях
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According to specifications defined in https://www.rfc-editor.org/rfc/rfc2348 block size should be a value between 8 and 65464 and specified in ASCII. So you must do something like that, assuming you use Python 3.x, filename It's kind of str (UTF-8) and octects an integer in the range 8 <= octects <= 65464:import struct def solicitud_WRQ_Oct(filename, sock, octects): ascii_filename = filename.encode('utf-8') blocksize = str(octects).encode("utf-8") formatt = f'!H{len(ascii_filename)}sB6sB7sB{len(blocksize)}sB' wrq = struct.pack(formatt, 2, ascii_filename, 0, b'octect', 0, b'blksize', 0, blocksize, 0 ) print(wrq) >>> solicitud_WRQ_Oct("foobar.txt", None, 1428) b'\x00\x02foobar.txt\x00octect\x00blksize\x001428\x00'
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The keys are many. Many can read:a = {'title': 'jr', 'description': '64', 'price': '3'} b = {'python': 'dede', 'key:': '#789', 'title': 'jr', 'description': '64', 'price': '3'} print(a.keys()-b.keys()) print(b.keys()-a.keys()) Conclusion:set() {'python', 'key:'} I mean, in this case, there's a lot of keys to the first dictionary in the second vocabulary.And in the second dictionary, there are two keys to the first dictionary.
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Software Programming • python variable • • carriann

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Let's start first by making it clear that the abuse of global variables (another theme is "constants") is in principle a bad practice, dangerous in some cases leading to unexpected side effects, in addition to making the code unnecessarily less readable and contributing to the known as spaghetti code.In my opinion, it doesn't make much sense to use shared global variables between modules just because we want to save ourselves by writing the arguments by calling a function, the justification for using a global variable should go further than that. Even going one more step, functions like cargarArchivo They should handle the opening and correct closing of the file and return the lists, not modifying on-site the lists that arrive to them using an open file outside the function, leaving in the air where and how that file is closed or where the cursor is located at a given time.This may seem to be of little importance, but it has and much. In a medium-sized large project (and regardless of the bugs that can be caused) using this kind of pattern makes someone remember you and not for good when it's up to you to keep that code, even oneself when after a while checks your own code ends up regretting. That said what you want can be done but having as far as:Global variables in Python are with respect to the module in which they are declared, not with the whole process.This means if we have:functions.py:def foo(): global cad print(cad) main.py:import funciones cad = "Hola" funciones.foo() We'll have a mistake:Traceback (most recent call last): File "D:\main.py", line 4, in <module> funciones.foo() File "D:\funciones.py", line 3, in foo print(cad) NameError: name 'cad' is not defined cad is global main.py But it's not in functions.py. Can you get that?funciones.foo agree to the same without passing it as argument (which I repeat, is normal)? The answer is yes, it is and in different ways. For example:Use módulo.variable to assign (and in this case define) the variable in its own funciones.py from main.py:import funciones cad = "Hola" funciones.cad = cad funciones.foo() Very nice, but cad is an immutable object because it is a chain, if we can change cad Then we can take a surprise:>>> cad = "Adios" >>> funciones.foo() 'Hola' Use a third module to share the global variables that are imported by all those who share them:global.py:cad = "Hola" functions.py:import globales def foo(): print(globales.cad) main.py:import funciones import globales funciones.foo() # 'Hola' globales.cad = "Adios" funciones.foo() # 'Adios' The remedy is worse than the disease, we should not tend to make global variables that strictly do not require it (there are cases in which their use is necessary and justified, especially in the case of constants), the tendency must be the reverse. As Python's Zen says:The namespaces are a great idea have to do more than that! A couple of observations:Use always global variable in the functions that use a global variable, even if they are mutable objects like the lists of your example.Never use readlines unless you want a list with the file lines to be used directly. In other cases it is very inefficient and unnecessary. Your function cargarArchivo is simpler and more efficient to do:for line in archivo: fila = list(line.rstrip().replace(",", "")) print fila or if your lines are the way "a,b,c,d,e"(one character separated by comma):for line in archivo: fila = line.rstrip().split(",") print fila

python BeautifulSoup

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