working with list

[princessotes]

i have two files containing lists and I would like to perform some manipulations with the numbers.

file 1:

• A 1
• 
  
• B 2
• 
  
• C 3

and file 2:

• A 4
• 
  
• B 5
• 
  
• C 6

I have written the following code to read in the files and then add list 1 and list 2 together. The code is as follows:

energy_file_in= open('test.dat', "r")
slab_file_in= open('pt3x_slab.dat', "r")
energy_in=energy_file_in.readlines()
slab_in=slab_file_in.readlines()
energy_file_in.close()
slab_file_in.close()

#write data
raw_data_1_file_out = open('ads_ene.dat', "w")

energy=[]
for i in energy_in:
    energy=i.split()
    for j in slab_in:
        slab=j.split()
        x = "%0.7f" %(float(float(energy[1]))+(float(slab[1])))
        print>>raw_data_1_file_out,slab[0], x

The output it generates is not what I want. I just want it to generate a list showing

A 5
B 7
C 9

Pls can someone suggest where I am going wrong with this code.

Thank you

[woooee]

Assuming both files are the same length (if they are not you will have to account for that), use the same offset for each list, i.e. record 1 from file a-->record 1 from file b

for ctr in len(energy_in):
    ## print them for testing
    print energy_in[ctr], slab_in[ctr]
    energy=energy_in[ctr].split()
    ##for j in slab_in:
    slab=slab_in[ctr].split()

    if energy[0] == slab[0]:
        x = "%0.7f" % (float(energy[1])+float(slab[1]))
    else:
        print "Recs not equal", energy, slab

If you want to find all "A"s and add them together, and the files do not correspond, then you should use a dictionary.

Pls can someone

Please don't turn this forum into a high school.

[Enalicho]

Assuming both files are the same length (if they are not you will have to account for that), use the same offset for each list, i.e. record 1 from file a-->record 1 from file b

for ctr in len(energy_in):
    ## print them for testing
    print energy_in[ctr], slab_in[ctr]
    energy=energy_in[ctr].split()
    ##for j in slab_in:
    slab=slab_in[ctr].split()

    if energy[0] == slab[0]:
        x = "%0.7f" % (float(energy[1])+float(slab[1]))
    else:
        print "Recs not equal", energy, slab

If you want to find all "A"s and add them together, and the files do not correspond, then you should use a dictionary. Please don't turn this forum into a high school.

You can't iterate over an integer ;)

@OP, your post doesn't really explain your code, nor provide good examples of input/output. If you want better help, you're going to need to try and write a better description of what you want to happen, what you have to make that happen and what you're not understanding.

[woooee]

The code the OP posted creates lists

energy_in=energy_file_in.readlines()
slab_in=slab_file_in.readlines()

[Enalicho]

The code the OP posted creates lists

I'm referring to

for ctr in len(energy_in):

;)

[woooee]

Too late to change it now. I have no problems with the OP doing a little debugging anyway, and since this post was in many forums, probably someone else has already provided enough to answer the OP's question.