Regular Expressions 101

Positive Lookbehind(?<=vol": ')

vol": 'the literal text vol": ' (case sensitive)

.*any character (except for line terminators), repeated any number of times

Positive Lookahead(?=',\s*"tvr)

',the literal text ',

\s*any whitespace character, repeated any number of times

"tvrthe literal text "tvr (case sensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(?<=vol": ').*(?=',\s*"tvr)

New

M18.r_16981 = {
    "ltt": '2018/06/21 11:43',
    "np": '0.050',
    "iep": '0.000',
    "iev": '0',
    "ltp": '0.050',
    "vol": '940000',
    "tvr": '49860',



    "dyh": '0.060',
    "dyl": '0.049'
};

Regular Expression

Extraction