Андрей's questions

代码如下：

import pandas as pd

sum_row1 = table2.loc['row_1', 'D'] = table2.loc['row_1'].sum()
sum_row2 = table2.loc['row_1', 'D'] = table2.loc['row_2'].sum()
sum_row3 = table2.loc['row_1', 'D'] = table2.loc['row_3'].sum()
sum_row4 = table2.loc['row_1', 'D'] = table2.loc['row_4'].sum()

table2 = pd.DataFrame( data= [[11,21,10, sum_row1], [10, 30, 20, sum_row2], [11, 41, 30, sum_row3], [50, -100, 30, sum_row4] ] , index = ['row_1', 'row_2', 'row_3', 'row_4'], columns = ['B', 'D', 'E', 'sum'])

table2

结论：

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
c:\Users\*USER*\Documents\hw7.ipynb Cell 1' in <cell line: 3>()
      1 import pandas as pd
----> 3 sum_row1 = table2.loc['row_1', 'D'] = table2.loc['row_1'].sum()
      4 sum_row2 = table2.loc['row_1', 'D'] = table2.loc['row_2'].sum()
      5 sum_row3 = table2.loc['row_1', 'D'] = table2.loc['row_3'].sum()

NameError: name 'table2' is not defined

有任何想法吗？

改变：

import pandas as pd


table2 = pd.DataFrame( data= [[11,21,10, sum_row1], [10, 30, 20, sum_row2], [11, 41, 30, sum_row3], [50, -100, 30, sum_row4] ] , index = ['row_1', 'row_2', 'row_3', 'row_4'], columns = ['B', 'D', 'E', 'sum'])

sum_row1 = table2.loc['row_1', 'D'] = table2.loc['row_1'].sum()
sum_row2 = table2.loc['row_1', 'D'] = table2.loc['row_2'].sum()
sum_row3 = table2.loc['row_1', 'D'] = table2.loc['row_3'].sum()
sum_row4 = table2.loc['row_1', 'D'] = table2.loc['row_4'].sum()


table2

新输出：

NameError                                 Traceback (most recent call last)
c:\Users\*USER*\Documents\hw7.ipynb Cell 1' in <cell line: 3>()
      1 import pandas as pd
----> 3 table2 = pd.DataFrame( data= [[11,21,10, sum_row1], [10, 30, 20, sum_row2], [11, 41, 30, sum_row3], [50, -100, 30, sum_row4] ] , index = ['row_1', 'row_2', 'row_3', 'row_4'], columns = ['B', 'D', 'E', 'sum'])
      5 sum_row1 = table2.loc['row_1', 'D'] = table2.loc['row_1'].sum()
      6 sum_row2 = table2.loc['row_1', 'D'] = table2.loc['row_2'].sum()

NameError: name 'sum_row1' is not defined

有一个代码：

import pandas as pd
loc1 = *тут нужно получить сумму всех значений в row_1*
table2 = pd.DataFrame( data= [[11,21,10], [10, 30, 20], [11, 41, 30], [50, -100, loc1]  ] , index = ['row_1', 'row_2', 'row_3', 'row_4'], columns = ['B', 'D', 'E'])

table2

如何学习row_1的总和

写了我的模块：

import time


sec =  int(input())
min =  int(input())
hour = int(input())

if sec == '':
     sec = None
     exit(0)
if min == '':
    min = None
    exit(0)
if hour == '':
    hour = None
    exit(0) 
    

def time_to_seconds():
    second = (min * 60) + (hour * 3600) + sec
    return second
    
print(time_to_seconds())
time_to_find = int(input())

if time_to_find == '':
     time_to_find = None
     exit(0)

def time_from_seconds():

   time_output = time.strftime("%H Hours %M Minutes %S Seconds", time.gmtime(time_to_find)) 
   return time_output

print(time_from_seconds())

我做了一个文件，我在其中写道：

import timecount

结论是：

4
4
4
14644
4
00 Hours 00 Minutes 04 Seconds

前 3 行是变量sec min和的输入hour。第 4 行 - 秒的输出。第 5 行 - 输入秒。第 6 行 - 时间输出。如您所知，虽然我只导入了它，但整个模块都被执行了。

我在 php.ini 中使用 OpenServer 面板，它看起来像这样：

extension_dir                = "c:/openserver/modules/php/PHP_7.4/ext"


;extension = intl

当您尝试取消注释时，当您重新启动服务器时，它会被注释掉。已安装 php_intl.dll。

BeautifulSoup 上有一个简单的解析器，它看起来像这样：

url = 'https://www.avito.ru/sankt-peterburg/telefony/mobile-ASgBAgICAUSwwQ2I_Dc?cd=1&q=%D1%81%D0%BC%D0%B0%D1%80%D1%82%D1%84%D0%BE%D0%BD'
response = requests.get(url)
soup = BeautifulSoup(response.text, 'lxml')
quotes = soup.find_all('h3', class_='title-root-j7cja iva-item-title-_qCwt title-listRedesign-XHq38 title-root_maxHeight-SXHes text-text-LurtD text-size-s-BxGpL text-bold-SinUO')



for quote in quotes:
    print(quote.text)

如何将值写入quotesCSV？

Ubuntu 使用什么哈希/etc/shadow？

Linux 20.10 尝试登录 GRUB，初始尝试失败。检查的 Timeot/etc/default/grub 看起来像这样：

GRUB_TIMEOUT="0"

替换为

GRUB_TIMEOUT="5"

但这没有帮助。

完整的 cfg 如下所示：

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT="5"
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""