Question

我想通过使用带有某些条件的单个循环来创建多个列表。我知道如何创建一个通过追加完成的列表，但是这里循环的所有结果都放在一个我不想要的列表中。可以这么说，我们对前100个数字运行循环，我想创建多个列表，其中第一个列表包含直到5的数字，第二个从6到10的数字，第三个从11到15的数字，依此类推。此代码仅适用于我创建的一个列表。

number = range(100)
first = []
for i in number:
    first.append(i)
first

Answer 1

类似的东西：

Traceback (most recent call last):

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connection.py", line 159, in _new_conn

    (self._dns_host, self.port), self.timeout, **extra_kw)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\util\connection.py", line 57, in create_connection

    for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\socket.py", line 748, in getaddrinfo

    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):

socket.gaierror: [Errno 11004] getaddrinfo failed



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connectionpool.py", line 600, in urlopen

    chunked=chunked)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connectionpool.py", line 343, in _make_request

    self._validate_conn(conn)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connectionpool.py", line 839, in _validate_conn

    conn.connect()

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connection.py", line 301, in connect

    conn = self._new_conn()

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connection.py", line 168, in _new_conn

    self, "Failed to establish a new connection: %s" % e)

urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x00000000072AF400>: Failed to establish a new connection: [Errno 11004] getaddrinfo failed



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\adapters.py", line 449, in send

    timeout=timeout

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\connectionpool.py", line 638, in urlopen

    _stacktrace=sys.exc_info()[2])

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\urllib3\util\retry.py", line 398, in increment

    raise MaxRetryError(_pool, url, error or ResponseError(cause))

urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='accounts.google.com', port=443): Max retries exceeded with url: /o/oauth2/token (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x00000000072AF400>: Failed to establish a new connection: [Errno 11004] getaddrinfo failed'))



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

  File "C:/Users/udgtlvr/untitled4/bigquery", line 18, in <module>

    project_id=project_id, credentials=credentials)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\pandas_gbq\gbq.py", line 906, in read_gbq

    dialect=dialect, auth_local_webserver=auth_local_webserver)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\pandas_gbq\gbq.py", line 202, in __init__

    self.credentials = self.get_credentials()

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\pandas_gbq\gbq.py", line 216, in get_credentials

    credentials = self.get_user_account_credentials()

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\pandas_gbq\gbq.py", line 354, in get_user_account_credentials

    credentials = app_flow.run_console()

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\google_auth_oauthlib\flow.py", line 364, in run_console

    self.fetch_token(code=code)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\google_auth_oauthlib\flow.py", line 241, in fetch_token

    self.client_config['token_uri'], **kwargs)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests_oauthlib\oauth2_session.py", line 221, in fetch_token

    verify=verify, proxies=proxies)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\sessions.py", line 581, in post

    return self.request('POST', url, data=data, json=json, **kwargs)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests_oauthlib\oauth2_session.py", line 360, in request

    headers=headers, data=data, **kwargs)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\sessions.py", line 533, in request

    resp = self.send(prep, **send_kwargs)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\sessions.py", line 646, in send

    r = adapter.send(request, **kwargs)

  File "C:\Users\udgtlvr\AppData\Local\Continuum\anaconda3\lib\site-packages\requests\adapters.py", line 516, in send

    raise ConnectionError(e, request=request)

requests.exceptions.ConnectionError: HTTPSConnectionPool(host='accounts.google.com', port=443): Max retries exceeded with url: /o/oauth2/token (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x00000000072AF400>: Failed to establish a new connection: [Errno 11004] getaddrinfo failed'))



Process finished with exit code 1


I have install so many libraries Related to this issue.

输出：

l = []
for x in range(6, 102, 5):
  l.append([y for y in range(x-5, x)])

[[1, 2, 3, 4, 5], [6, 7, 8, 9, 10], [11, 12, 13, 14, 15], [16, 17, 18, 19, 20], [21, 22, 23, 24, 25], [26, 27, 28, 29, 30], [31, 32, 33, 34, 35], [36, 37, 38, 39, 40], [41, 42, 43, 44, 45], [46, 47, 48, 49, 50], [51, 52, 53, 54, 55], [56, 57, 58, 59, 60], [61, 62, 63, 64, 65], [66, 67, 68, 69, 70], [71, 72, 73, 74, 75], [76, 77, 78, 79, 80], [81, 82, 83, 84, 85], [86, 87, 88, 89, 90], [91, 92, 93, 94, 95], [96, 97, 98, 99, 100]]函数采用三个参数range，start和stop。

Answer 2

尝试一下，这将创建您想要的东西：

lists = [] 
for i in range(1, 100, 5): # range(start, end, size_of_each_list)
    lists.append(list(range(i,i + 5)))

lists将是：

[[1, 2, 3, 4, 5],
 [6, 7, 8, 9, 10],
 [11, 12, 13, 14, 15],
 [16, 17, 18, 19, 20],
 [21, 22, 23, 24, 25],
 [26, 27, 28, 29, 30],
 [31, 32, 33, 34, 35],
 [36, 37, 38, 39, 40],
 [41, 42, 43, 44, 45],
 [46, 47, 48, 49, 50],
 [51, 52, 53, 54, 55],
 [56, 57, 58, 59, 60],
 [61, 62, 63, 64, 65],
 [66, 67, 68, 69, 70],
 [71, 72, 73, 74, 75],
 [76, 77, 78, 79, 80],
 [81, 82, 83, 84, 85],
 [86, 87, 88, 89, 90],
 [91, 92, 93, 94, 95],
 [96, 97, 98, 99, 100]]

Answer 3

我将执行类似于以下内容的列表理解：

[[i, i+1, i+2, i+3, i+4] for i in range (1, 100, 5)]

输出看起来像这样：

[[1, 2, 3, 4, 5], 
...,
[96, 97, 98, 99, 100]]

https://docs.python.org/3/tutorial/datastructures.html#list-comprehensions

Answer 4

这是一种实现方法。基本上，您可以从列表中创建一个迭代器，然后从中获取所需的所有列表。

number = range(100)
number_iter = iter(number)
lists = []

while True:
  try:
    lists.append([next(number_iter) for _ in range(5)])
  except StopIteration as e:
    break
lists

这样做的好处是您的初始“号码”列表可以是任何内容...

Answer 5

我会在第一个列表中使用第二个列表。

number = range(100)
cnt = 0
first = []
second = []

for i in number:
    cnt += 1
    second.append(i)

    if cnt == 5:
        first.append(second)
        cnt = 0
        second = []

first

输出：

[[0, 1, 2, 3, 4],
 [5, 6, 7, 8, 9],
...
 [95, 96, 97, 98, 99]]

Answer 6

可能。我们可以通过在我们的globals()环境中直接创建变量来做到这一点。
（如果locals()仅应包含在封闭函数中，则使用它。）

您可以使用以下代码执行此操作：

# Run the loop
for i in range(100):

    # for 0-4, list_name = 'list_1'
    list_name = 'list_' + str(i//5 + 1)
    # Try to append to that list
    try:
        globals()[list_name].append(i)
    # If if doesn't exist, create it on the run!
    except KeyError:
        globals()[list_name] = [i]

此globals()[list_name] = [i]首先：

获取模块环境字典。
创建list_name变量。
将其初始化为包含i的列表。

让我们将它们全部打印出来：

for i in range(20):
    # Print list_1 through list_20
    list_name = 'list_' + str(i+1)
    print(list_name + ':', globals()[list_name])

您得到：

list_1: [0, 1, 2, 3, 4]
list_2: [5, 6, 7, 8, 9]
list_3: [10, 11, 12, 13, 14]
list_4: [15, 16, 17, 18, 19]
list_5: [20, 21, 22, 23, 24]
list_6: [25, 26, 27, 28, 29]
list_7: [30, 31, 32, 33, 34]
list_8: [35, 36, 37, 38, 39]
list_9: [40, 41, 42, 43, 44]
list_10: [45, 46, 47, 48, 49]
list_11: [50, 51, 52, 53, 54]
list_12: [55, 56, 57, 58, 59]
list_13: [60, 61, 62, 63, 64]
list_14: [65, 66, 67, 68, 69]
list_15: [70, 71, 72, 73, 74]
list_16: [75, 76, 77, 78, 79]
list_17: [80, 81, 82, 83, 84]
list_18: [85, 86, 87, 88, 89]
list_19: [90, 91, 92, 93, 94]
list_20: [95, 96, 97, 98, 99]

注意：为什么不来一些数字娱乐！请参阅python inflect软件包。

如何通过一个循环创建多个列表？

6 个答案: