ValueError-trying to split a line

[samu3l]

Hi,

I'm trying to split a line to use some numbers somwhere else, but i dont understand what is causing this error. I'm still a newbie in python so probably it's easy.
So the error shows that:

Error:
Traceback (most recent call last):
  File "C:\Users\samue\Documents\Documents\prepa\PT\tipe\expérimentation\releves\moyenne_val_triée.py", line 18, in <module>
    t,h,Text,Tint,lux = ligne.strip().split("\t")
ValueError: not enough values to unpack (expected 5, got 1)

The code i use

with open("data.txt","r") as f:
    for i in f:
        for _ in range(10):
            ligne=f.readline()
            print(ligne)
            t,h,Text,Tint,lux = ligne.strip().split("\t")

Maybe it could help to see whhat look like the line i try to split:
0.0 59.8 8.78 9.375 3546.53
0.0 59.77 8.77 9.375 3586.64
0.0 59.75 8.77 9.375 3627.19
and the code i use to organize the text:

fichier=open("data.txt","w")
for t,h,Text,Tint,Lux in zip(liste_t,liste_h,liste_Text,liste_Tint,liste_Lux):
    print(t,h,Text,Tint,Lux,sep="\t")
    t=str(t)
    h=str(h)
    Text=str(Text)
    Tint=str(Tint)
    Lux=str(Lux)
    fichier.write(t+"\t")
    fichier.write(h+"\t")
    fichier.write(Text+"\t")
    fichier.write(Tint+"\t")
    fichier.write(Lux+"\t"+"\n")
fichier.close()

As you see, I just show you the part of the programm which create the "\t" if you want to see the rest just ask.Same if you need further information.

Cordially,Samu3l

[Larz60+]

The error is from line 18, but that doesn't match your code.

[samu3l]

The error is from line 18, but that doesn't match your code.

well it's just that I initialize some element before but the error is in the text shown. Anyway i add those lines if it can help.

import os
os.chdir("C:\\Users\\samue\\Documents\\Documents\\prepa\\PT\\tipe\\expĂŠrimentation\\releves")
liste_t=[]
liste_Text=[]
liste_Tint=[]
liste_h=[]
liste_Lux=[]
tps=0
tempext=0
tempint=0
hum=0
lum=0
with open("data.txt","r") as f:
    for i in f:
        for _ in range(10):
            ligne=f.readline()
            print(ligne)
            t,h,Text,Tint,lux = ligne.strip().split("\t")

[Larz60+]

change this line:

            t,h,Text,Tint,lux = ligne.strip().split("\t")

to:

            ligne.strip().split("\t")
            print('length: {}, ligne: {}',format(len(ligne), ligne))
            t,h,Text,Tint,lux = ligne

So you can better see what's in ligne, and if it split correctly

[samu3l]

i try to change the line as you said but it give me en error, i should have change some values ?

Error:
Traceback (most recent call last):
  File "C:\Users\samue\Documents\Documents\prepa\PT\tipe\expérimentation\releves\moyenne_val_triée.py", line 19, in <module>
    print('length: {}, ligne: {}',format(len(ligne),ligne))
ValueError: Invalid format specifier

the code

with open("data.txt","r") as f:
    for i in f:
        for _ in range(10):
            ligne=f.readline()
            print(ligne)
            ligne.strip().split("\t")
            print('length: {}, ligne: {}',format(len(ligne),ligne))
            t,h,Text,Tint,lux = ligne

[buran]

line#7, it should be .format, not ,format

[samu3l]

ok i change it so it show that:

length: 30, ligne: 0.0	59.77	8.77	9.375	3586.64

Error:
Traceback (most recent call last):
  File "C:\Users\samue\Documents\Documents\prepa\PT\tipe\expérimentation\releves\moyenne_val_triée.py", line 20, in <module>
    t,h,Text,Tint,lux = ligne
ValueError: too many values to unpack (expected 5)

[Larz60+]

There's nothing wrong with the way you are reading data (with for loop, not the second read with readlines) , or
populating the values.
The problem is with range!
you are trying to read 10 lines
you are also trying to read two records at a time
but data runs out before that, thus the error.
The following will work:

with open("data.txt","r") as f:
    for ligne in f:
        print(ligne)
        t, h, Text, Tint, lux = ligne.strip().split("\t")