如何在线搜索值并检查它是否符合给定条件

Question

I have a file in.txt .

name="XYZ_PP_0" number="0x12" bytesize="4" info="0x0000001A"
name="GK_LMP_2_0" number="0xA5" bytesize="8" info="0x00000000bbae321f"
name="MP_LKO_1_0" number="0x356" bytesize="4" info="0x00000234"
name="PNP_VXU_1_2_0" number="0x48A" bytesize="8" info="0x00000000a18c3ba3"
name="AVU_W_2_3_1" number="0x867" bytesize="1" info="0x0b"

From this file i need to search for number="0x867" and check if it's info value matches to the expected given info value which is 0x0a. if it matches print matches else doesn't matches.

then next i need to search for number="0x12" and store it's info value ie info="0x0000001A" and then search for number="0x356" and store it's info value info="0x00000234" to another variable. this value should be equal to previous info value + 0x00000004 (ie 0x0000001A + 0x00000004 = 0x0000001E).

if resulted value matches to info="0x00000234" then print number="0x12" info value 0x00000012 + 0x00000004 matches to info value of number="0x356".

else print resulted value not matching

This is current attempt in python:

with open("in.txt", "r") as infile:

     XYZ = False
     MP = False
     AVU = False
 
     xyz = ['number="0x12"', 'info="0x0000001A"']
     mp  = ['number="0x356"', 'info="0x00000234"']
     avu = ['number="0x867"', 'info="0x0b"']

     for line in infile:
         if all(x in line for x in xyz):
            XYZ = True
            continue

         if all(x in line for x in mp):
            MP = True
            continue
 
         if all(x in line for x in avu):
            AVU = True
            continue  



       

but this code will simply checks if the line is present in file or not. it won't check the conditions mentioned above.

Is there a way i can search for the number in the text file and store it's info value to variable?

Answer 1

You have to escape the double quotes, or you can use single quotes so that you string can have double quotes in it like this:

'number="0x12"'

Also, in your if condition the first part is wrong. Here is the loop:

xyz_list = ['number="0x12"', 'info="0x0000001A"']
mp_list  = ['number="0x356"', 'info="0x00000234"']
avu_list = ['number="0x867"', 'info="0x0b"']

for line in infile:
     if all(x in line for x in xyz_list):
         XYZ = True
         continue

     if all(x in line for x in mp_list):
         MP = True
         continue
 
     if all(x in line for x in avu_list):
         AVU = True
         continue   

The all() function will check substrings in the line and returns true if all exist.

Answer 2

Try to convert the.txt file into dataframe and apply the conditions using the pandas datframe

import pandas as pd
df = pd.read_fwf('myfile.txt')
or 
df = pd.read_csv('myfile.txt', sep=" ")
or 
df = pd.read_csv('myfile.txt', ,delimiter="\t")
or 
df = pd.read_csv('myfile.txt', sep=" ", header=None, names=["Pos", "Lang", "Perc"])