检查日期范围的用户输入是否按连续的时间顺序对进行
Check if user input for date ranges has been made in consecutive, chronological pairs
我用 PyWebIO 创建了一个最多包含六个日期的用户表单，每一对组成一个从开始日期 sdt 到结束日期 edt 的日期范围。前两个日期是必需的，其余四个是可选的。可以通过函数验证此表单； check_form 在我的示例中。
我想使用此功能只允许用户输入连续的、按时间顺序排列的对。
示例表格：
from pywebio import *
form = input.input_group("form", [
input.input("Period 1 - Start",
name="sdt_1",
type=input.DATE,
required=True),
input.input("Period 1 - End",
name="edt_1",
type=input.DATE,
required=True),
input.input("Period 2 - Start (optional)",
name="sdt_2",
type=input.DATE),
input.input("Period 2 - End (optional)",
name="edt_2",
type=input.DATE),
input.input("Period 3 - Start (optional)",
name="sdt_3",
type=input.DATE),
input.input("Period 3 - End (optional)",
name="edt_3",
type=input.DATE),
], validate = check_form)
PyWebIO 将输入排序为字典，使用名称作为键，输入作为值。
print(form) 的输出：
form = {
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2023-01-01',
'edt_3': '2023-08-08'
}
我想出了一个解决方案，可以检查时间顺序和相同数量的条目。但是，此解决方案仍然允许用户进行无意义的输入，例如只输入 sdt_1, edt_1, sdt_3, sdt_3 或 sdt_1, edt_1, sdt_2, edt_3
的日期
def check_form(data):
data_lst = []
for key in data.keys():
if data[key] != "":
data_lst.append(data[key])
if sorted(data_lst) != data_lst:
return ("sdt_1", "ERROR: Entries not in chronological order.")
if len(data_lst) % 2:
return ("sdt_1", "ERROR: Uneven amount of entries.")
非常感谢任何帮助！
我想出了一个解决办法。将字典放入列表中，并从第二个索引开始检查前一个索引是否为空。像这样：
def check_form(data):
data_lst = []
data_lst_2 = list(form.values())
for key in data.keys():
if data[key] != "":
data_lst.append(data[key])
if sorted(data_lst) != data_lst:
return ("sdt_1", "ERROR: Entries not in chronological order.")
if len(data_lst) % 2:
return ("sdt_1", "ERROR: Uneven amount of entries.")
for item in data_lst_2[1:]:
if data_lst_2[data_lst_2.index(item) - 1] == "":
return ("sdt_1", "ERROR: Entries not consecutive.")
由于第一对是必需的，其余两对是可选的，因此您应该强制执行该逻辑。
def check_form(data):
required_pairs = {1} # Specify all the required pairs in this set
max_pairs = 3 # Max numbber of pairs
data_lst = []
for i in range(1, max_pairs+1):
s_key = f"sdt_{i}"
e_key = f"edt_{i}"
# Get the data from the dict. If the key doesn't exist, treat it as an empty string
s_val = data.get(s_key, "")
e_val = data.get(e_key, "")
if i in required_pairs or s_val or e_val:
if i in required_pairs:
# This is a required pair and input is missing
if not s_val: return (s_key, "ERROR: Missing required input")
elif not e_val: return (e_key, "ERROR: Missing required input")
elif e_val and not s_val:
# e_key is specified but not s_key
return (s_key, "ERROR: Uneven pair of inputs")
elif s_val and not e_val:
# s_key is specified but not e_key
return (e_key, "ERROR: Uneven pair of inputs")
# We didn't return an error, so this data must be valid
data_lst.append(data[s_key])
data_lst.append(data[e_key])
if sorted(data_lst) != data_lst:
return ("sdt_1", "ERROR: Entries not in chronological order")
请注意，您可以通过 if s（空字符串是假的）
来检查字符串 s 是否为空
我们来测试一下：
##### VALID INPUTS:
# Case 1: Specify all inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2023-01-01',
'edt_3': '2023-08-08'
}) == None
# Case 2: Specify only required inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '',
'sdt_3': '',
'edt_3': ''
}) == None
# Case 3.1: Specify required inputs and one optional input
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-01-08',
'sdt_3': '',
'edt_3': ''
}) == None
# Case 3.2: Specify required inputs and one optional input
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '',
'sdt_3': '2021-01-01',
'edt_3': '2021-01-08',
}) == None
#### INVALID INPUTS
# Case 4.1: Skip required inputs
assert check_form({
'sdt_1': '',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('sdt_1', "ERROR: Missing required input")
# Case 4.2: Skip required inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('edt_1', "ERROR: Missing required input")
# Case 4.3: Skip required inputs
assert check_form({
'sdt_1': '',
'edt_1': '',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('sdt_1', "ERROR: Missing required input")
# Case 5.1: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('sdt_2', "ERROR: Uneven pair of inputs")
# Case 5.2: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('edt_2', "ERROR: Uneven pair of inputs")
# Case 5.3: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '',
'edt_3': '2022-01-08',
}) == ('sdt_3', "ERROR: Uneven pair of inputs")
# Case 5.4: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '',
}) == ('edt_3', "ERROR: Uneven pair of inputs")
# Case 5.5: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '',
'sdt_3': '2022-01-01',
'edt_3': '',
}) == ('edt_2', "ERROR: Uneven pair of inputs")
# Case 5.6: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '2021-08-08',
'sdt_3': '',
'edt_3': '2022-08-08',
}) == ('sdt_2', "ERROR: Uneven pair of inputs")
# Case 6.1: Non-chronological inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2019-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-08-08',
}) == ('sdt_1', "ERROR: Entries not in chronological order")
# Case 6.2: Non-chronological inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2022-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-08-08',
}) == ('sdt_1', "ERROR: Entries not in chronological order")
我用 PyWebIO 创建了一个最多包含六个日期的用户表单，每一对组成一个从开始日期 sdt 到结束日期 edt 的日期范围。前两个日期是必需的，其余四个是可选的。可以通过函数验证此表单； check_form 在我的示例中。
我想使用此功能只允许用户输入连续的、按时间顺序排列的对。
示例表格：
from pywebio import *
form = input.input_group("form", [
input.input("Period 1 - Start",
name="sdt_1",
type=input.DATE,
required=True),
input.input("Period 1 - End",
name="edt_1",
type=input.DATE,
required=True),
input.input("Period 2 - Start (optional)",
name="sdt_2",
type=input.DATE),
input.input("Period 2 - End (optional)",
name="edt_2",
type=input.DATE),
input.input("Period 3 - Start (optional)",
name="sdt_3",
type=input.DATE),
input.input("Period 3 - End (optional)",
name="edt_3",
type=input.DATE),
], validate = check_form)
PyWebIO 将输入排序为字典，使用名称作为键，输入作为值。
print(form) 的输出：
form = {
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2023-01-01',
'edt_3': '2023-08-08'
}
我想出了一个解决方案，可以检查时间顺序和相同数量的条目。但是，此解决方案仍然允许用户进行无意义的输入，例如只输入 sdt_1, edt_1, sdt_3, sdt_3 或 sdt_1, edt_1, sdt_2, edt_3
def check_form(data):
data_lst = []
for key in data.keys():
if data[key] != "":
data_lst.append(data[key])
if sorted(data_lst) != data_lst:
return ("sdt_1", "ERROR: Entries not in chronological order.")
if len(data_lst) % 2:
return ("sdt_1", "ERROR: Uneven amount of entries.")
非常感谢任何帮助！
我想出了一个解决办法。将字典放入列表中，并从第二个索引开始检查前一个索引是否为空。像这样：
def check_form(data):
data_lst = []
data_lst_2 = list(form.values())
for key in data.keys():
if data[key] != "":
data_lst.append(data[key])
if sorted(data_lst) != data_lst:
return ("sdt_1", "ERROR: Entries not in chronological order.")
if len(data_lst) % 2:
return ("sdt_1", "ERROR: Uneven amount of entries.")
for item in data_lst_2[1:]:
if data_lst_2[data_lst_2.index(item) - 1] == "":
return ("sdt_1", "ERROR: Entries not consecutive.")
由于第一对是必需的，其余两对是可选的，因此您应该强制执行该逻辑。
def check_form(data):
required_pairs = {1} # Specify all the required pairs in this set
max_pairs = 3 # Max numbber of pairs
data_lst = []
for i in range(1, max_pairs+1):
s_key = f"sdt_{i}"
e_key = f"edt_{i}"
# Get the data from the dict. If the key doesn't exist, treat it as an empty string
s_val = data.get(s_key, "")
e_val = data.get(e_key, "")
if i in required_pairs or s_val or e_val:
if i in required_pairs:
# This is a required pair and input is missing
if not s_val: return (s_key, "ERROR: Missing required input")
elif not e_val: return (e_key, "ERROR: Missing required input")
elif e_val and not s_val:
# e_key is specified but not s_key
return (s_key, "ERROR: Uneven pair of inputs")
elif s_val and not e_val:
# s_key is specified but not e_key
return (e_key, "ERROR: Uneven pair of inputs")
# We didn't return an error, so this data must be valid
data_lst.append(data[s_key])
data_lst.append(data[e_key])
if sorted(data_lst) != data_lst:
return ("sdt_1", "ERROR: Entries not in chronological order")
请注意，您可以通过 if s（空字符串是假的）
s 是否为空
我们来测试一下：
##### VALID INPUTS:
# Case 1: Specify all inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2023-01-01',
'edt_3': '2023-08-08'
}) == None
# Case 2: Specify only required inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '',
'sdt_3': '',
'edt_3': ''
}) == None
# Case 3.1: Specify required inputs and one optional input
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-01-08',
'sdt_3': '',
'edt_3': ''
}) == None
# Case 3.2: Specify required inputs and one optional input
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '',
'sdt_3': '2021-01-01',
'edt_3': '2021-01-08',
}) == None
#### INVALID INPUTS
# Case 4.1: Skip required inputs
assert check_form({
'sdt_1': '',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('sdt_1', "ERROR: Missing required input")
# Case 4.2: Skip required inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('edt_1', "ERROR: Missing required input")
# Case 4.3: Skip required inputs
assert check_form({
'sdt_1': '',
'edt_1': '',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('sdt_1', "ERROR: Missing required input")
# Case 5.1: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('sdt_2', "ERROR: Uneven pair of inputs")
# Case 5.2: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '',
'sdt_3': '2022-01-01',
'edt_3': '2022-01-08',
}) == ('edt_2', "ERROR: Uneven pair of inputs")
# Case 5.3: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '',
'edt_3': '2022-01-08',
}) == ('sdt_3', "ERROR: Uneven pair of inputs")
# Case 5.4: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '',
}) == ('edt_3', "ERROR: Uneven pair of inputs")
# Case 5.5: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '',
'sdt_3': '2022-01-01',
'edt_3': '',
}) == ('edt_2', "ERROR: Uneven pair of inputs")
# Case 5.6: Incomplete pair of optional inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '',
'edt_2': '2021-08-08',
'sdt_3': '',
'edt_3': '2022-08-08',
}) == ('sdt_2', "ERROR: Uneven pair of inputs")
# Case 6.1: Non-chronological inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2019-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2021-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-08-08',
}) == ('sdt_1', "ERROR: Entries not in chronological order")
# Case 6.2: Non-chronological inputs
assert check_form({
'sdt_1': '2020-01-01',
'edt_1': '2020-08-08',
'sdt_2': '2021-01-01',
'edt_2': '2022-08-08',
'sdt_3': '2022-01-01',
'edt_3': '2022-08-08',
}) == ('sdt_1', "ERROR: Entries not in chronological order")