CODEWITHSUNDEEP
pythonlist
Nekoso
Nekoso

Reputation: 113

Readin a .txt file and put the elements in a list (Python)

Im new in Python and i need some help. i got a .txt file in this form:

Time[tab]Signal

0[tab]1.05

0.5[tab]1.06

1[tab]1.09

1.5[tab]1.12

Now i want to read in the file. I need two lists. List1 should contain the time and list2 should contain the signal.

This is my try:

daten = open("extedit.txt", "r")
lines = daten.readlines();
list1 = []

for i in lines:
    list1.append(i.strip().split('\t'));
daten.close()

del list1[1]
print(list1)

thats the form at my txt file

Something went wrong i think.. maybe you can help me

i got this in my terminal: [['{\rtf1\ansi\ansicpg1252\cocoartf1504\cocoasubrtf760'], ['{\colortbl;\red255\green255\blue255;}'], ['{\*\expandedcolortbl;;}'], ['\paperw11900\paperh16840\margl1440\margr1440\vieww10800\viewh8400\viewkind0'], ['\pard\tx566\tx1133\tx1700\tx2267\tx2834\tx3401\tx3968\tx4535\tx5102\tx5669\tx6236\tx6803\pardirnatural\partightenfactor0'], [''], ['\f0\fs24 \cf0 Zeit', 'Signal\'], ['0.01', '1.1\'], ['0.02', '1.105\'], ['0.03', '1.108\'], ['0.04', '1.2\'], ['0.05', '1.205\'], ['0.06', '1.209}']]

Upvotes: 1

Views: 262

Answers (3)

over.unity
over.unity

Reputation: 315

don't use semicolons in python! As suspected, you are trying to read a RTF file.
First reformat your file. I propose also an other way:

import csv

list1 = []
with open("extedit.txt") as tsv:
    for line in csv.reader(tsv, dialect="excel-tab"):
        list1.append(line[0])

del list1[0]
print(list1)

Upvotes: 1

Luke
Luke

Reputation: 774

I have created a .txt file with same contents that you provided and the program you wrote prints this (multi-dimensional list):

[['Time', 'Signal'], ['0.5', '1.06'], ['1', '1.09'], ['1.5', '1.12']]

By the looks of it your file isn't actually .txt.

To answer your question:

del list1[1]

This will delete the wrong position. To delete Time/Signal line, you should do this instead:

del list1[0]

This is because items in Python lists start at positon 0.

Try this code (list comprehension):

daten = open("extedit.txt", "r")
lines = daten.readlines()
list1 = []
for i in lines:
    list1.append(i.strip().split('\t'));
daten.close()

del list1[0]

zeit = [i[0] for i in list1]

signal = [i[1] for i in list1]

print(zeit)
print(signal)

Upvotes: 0

Fuji Komalan
Fuji Komalan

Reputation: 2047

Change the File_Name= according to your needs. 

File_Name = 'aa.txt'
time_list = []
signal_list = []
with open(File_Name,'r') as fh:
    for line in fh:
        line = line.strip() 
        time,signal = line.split()
        time = time.strip()
        signal = signal.strip()
        time_list.append(time)
        signal_list.append(signal)

print(time_list)
print(signal_list)

Upvotes: 1

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