Creating a dictionary from a .txt file using courses

Question

Write a program to create a dictionary that has the key-value pairs from the file "CourseInstructor.txt" I started to create a dictionary using the txt, file but receive the following error:

Course=("CourseInstructor.txt",'r') for line in Course: key,val = line.split(" ") Inst[key] = val Course.close()

ValueError: not enough values to unpack (expected 2, got 1)

You never opened the file. You missed open in front of ("CourseInstructor.txt",'r'). — Loocid
– Loocid, Commented Apr 9, 2018 at 3:36
I guess your file CourseInstructor.txt don't contain enough data. — Vipin Yadav
– Vipin Yadav, Commented Apr 9, 2018 at 3:36

Mehrdad Pedramfar · Accepted Answer · 2018-04-10 09:59:21Z

You should do something like this:

Inst = dict() with open("CourseInstructor.txt",'r') as Course: for line in Course: key,val = line.rstrip("\n").split(" ") Inst[key] = val

the best way to open files is with, it will close file after. the rstrip("\n") will remove \n from end of each line. one more thing that you should know is your input file(CourseInstructor.txt) should be like this:

key1 value1 key2 value2 key3 value3

If your file dose not contain new lines, use this:

your_string = your_string.split(" ") keys = [i for i in your_string[::2]] values = [i for i in your_string[1::2]] final_dict = {keys[i]:values[i] for i in range(len(values)) }

I tried that and it is still giving me the same error :ValueError: not enough values to unpack (expected 2, got 1)
For this line of code: key,val = line.rstrip("\n").split(" ")
CIS2200 Izen CIS3100 Ennoure CIS3120 Kumar CIS3400 Ferns CIS3750 Gubernat CIS3920 Cai CIS4100 Friedman CIS4110 Finnegan CIS4160 Craig CIS4400 Holowczak CIS4800 Finnegan CIS5800 Brown CIS9340 Kline CIS9440 Holowczak CIS9480 Bianco CIS9490 Kiris CIS9557 Kumar CIS9660 Gao

Aaditya Ura · Accepted Answer · 2018-04-09 04:53:45Z

If your file looks like this:

key1 value1 key2 value2 key3 value3

you can try:

print({line.split()[0]:line.split()[1] for line in open('file','r')})

Output:

{'key1': 'value1', 'key2': 'value2', 'key3': 'value3'}

File will eventually be closed when the file object is garbage collected. check this for more info.

Collectives™ on Stack Overflow

Creating a dictionary from a .txt file using courses

2 Answers 2

7 Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

7 Comments

Comments

Linked

Related