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Parsing Textfields

Project description

textfield_parser

Getting a string from a textfield and returns the parsed content.

read_list

Reads a comma separated list and returns either the items or the remainder of the additional list when a text contains the modifier 'Not'.

def read_list(text,value_list=None,sep = ',', modifier_list = None)`

Arguments

  • text -string- from textfield that will be parsed
  • value_list -list- list from which the parsed text elements will be removed when there is a modifier 'NOT'.
  • sep -char- element separator in string
  • modifier_list -list- List of modifier for excluding the listed items from value_list Default: ['!', '~', 'not', 'Not', 'NOT']

Return

  • List of parsed parameters

Examples

**Simple list: **

  • text = "'Hello', 'a list', separated by , me "

-> ['Hello', 'a list', 'separated by', 'me']

Not list

  • text = "Not Mercedes, Renault, Citroen, Peugeaut, 'Rolls Royce'"
  • value_list = ['Mercedes', 'Audi', 'VW', 'Skoda', 'Renault', 'Citroen', 'Peugeot', 'Rolls Royce']

-> ['Audi', 'VW', 'Skoda', 'Peugeot']

read_map

Reads a comma separated list of mappings and returns a dictionary.

def read_map(text, sep=',')

Arguments

  • text -string- from textfield that will be parsed
  • sep -char- element separator in string

Return

  • dictionary of parsed parameters

Example

text = "'Mercedes':expensive, Audi:'sportiv', VW : 'people', Citroen:cool, 'Rolls Rocye': royal"

-> {'Mercedes': 'expensive', 'Audi': 'sportiv', 'VW': 'people', 'Citroen': 'cool', 'Rolls Rocye': 'royal'}

read_json

Reads a json formatted string and return a dictionary

Arguments

  • text -string- json-string

Return

  • dictionary of json

Example

json_text = "{"Luxury Class": {"Mercedes":"expensive","Rolls Rocye": "royal"}, "High Middle Class":{"Audi":"sportiv"}, "Middle Class" : {"Citroen":"cool","VW" : "people" }}"

-> {'Luxury Class': {'Mercedes': 'expensive', 'Rolls Rocye': 'royal'}, 'High Middle Class': {'Audi': 'sportiv'}, 'Middle Class': {'Citroen': 'cool', 'VW': 'people'}}

read_comparisons

Parses a list of comparisons and returns a list of lists with 3 items: (left, comparison-operator, right). There is an internal mapping of comparison characters: {'!=':'!','==':'=','>=':'≥','=>':'≥','<=':'≤','=<':'≤'}

def read_comparisons(text,sep = ',',formula_map = None)

Arguments

  • text -string- Textfield string
  • sep -char- element separator in string
  • modifier_map -dictionary- mapping of comparison strings to 1-char comparison. Default: {'!=': '!', '==': '=', '>=': '≥', '=>': '≥', '<=': '≤', '=<': '≤'} `

Return

  • List of 3 element lists

Examples

' anna > 1.70, norbert != 900, cindy <= 1.65'

-> [['anna', '>', 1.7], ['norbert', '!', 900.0], ['cindy', '≤', 1.65]]

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