我正在编写一个脚本,用于检查数据文件的格式(如csv)
我在每个字段上应用各种规则:最大长度、空字段、值边界、要匹配的正则表达式(检查有效电子邮件)等
字典中的这些规则(每个COLLAM有一个):
#column 1 : integer from 1 to 99, except 10
{
"minval":1,
"forbiddenvals": [10,15],
"maxval":100
}
我的函数定义如下:
def vercol(data,
empty=False,isadate = None,
minlen=None,maxlen=None,
minval=None,maxval=None,
allowedvals=[],forbiddenvals=[],
regex =None):
"""
Verify if the field 'data' checks the rules
Parameters /Rules
----------
empty : Boolean, optional
set to True if empty field is accepted. The default is False.
minlen : integer, optional
If set, minimum length for the field.
maxlen : integer, optional
If set, maximum length for the field.
forbidenvals : List, optional
List of rejected values.
(...)
Returns
-------
True if all the rules are met.
"xError" if a test failled, where x depend of the wich test failed FIRST
"""
if data == "":
return True if empty else "EmptyFieldError"
if minlen and len(data) < int(minlen):
return "MinLengthError"
....
other rules
....
return True
当我正常调用参数时,该函数工作正常:
我想做的是像这样传递字典:
rules = {
"minval":1,
"forbiddenvals": [10,15],
"maxval":100
}
result = vercol(field, rules)
#foo
问题:它不工作,参数只使用默认值,尽管在dict中
#works fine
vercol('abcdefghi', maxlen=4) #return "MaxLenError"
vercol('', maxlen=4) #return "EmptyFieldError"
vercol('', empty=True) #return True
#problem
rule = {"maxlen":4,"empty":False}
vercol('',rule) #retuns True , expected : "EmptyFieldError"
vercol('abcdefgh',rule) #retuns True , expected : "MaxLenError"
有解决这个问题的线索吗
您必须使用**打开dict的包装。试试看
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