从文本文件中读取多行

Question

The goal for my project is to count all the characters in a text file. My code seems to work, but seems it will only ready the first line of code from the file and nothing else. I can easily do it in java, but we are required to use python and I have very little experience working with python

my code is as follows:

import pandas as pd

from collections import Counter

with open ('myFile', "r") as myfile:
   data=myfile.readlines()

counter = Counter(lines)

print (counter['a'])
print (counter['b'])
print (counter['c'])
print (counter['d'])
print (counter['e'])
print (counter['f'])
print (counter['g'])
print (counter['h'])
print (counter['i'])
print (counter['j'])
print (counter['k'])
print (counter['l'])
print (counter['m'])
print (counter['n'])
print (counter['o'])
print (counter['p'])
print (counter['q'])
print (counter['r'])
print (counter['s'])
print (counter['t'])
print (counter['u'])
print (counter['v'])
print (counter['w'])
print (counter['x'])
print (counter['y'])
print (counter['z'])

Answer 1

I am not sure what lines is from your code, you are assigning the list containing lines from the text into data variable. If you want to read the whole text as a single string, then just use read() method.

from collections import Counter

with open ('myFile', "r") as myfile:
   data = myfile.read()

counter = Counter(data)

print (counter['a'])
print (counter['b'])
...

Answer 2

I realized that the code I posted was from two editors I had open at the same time with the same version number, which caused the errors. I have fixed that (new complete code is below) and is "working" I need to check it against my java code results. I have included the results of the code

import pandas as pd

from collections import Counter



data = open('myFile.txt').read()
data.lower()
print (data)


counter = Counter(data)

print (counter['a'])
print (counter['b'])
print (counter['c'])
print (counter['d'])
print (counter['e'])
print (counter['f'])
print (counter['g'])
print (counter['h'])
print (counter['i'])
print (counter['j'])
print (counter['k'])
print (counter['l'])
print (counter['m'])
print (counter['n'])
print (counter['o'])
print (counter['p'])
print (counter['q'])
print (counter['r'])
print (counter['s'])
print (counter['t'])
print (counter['u'])
print (counter['v'])
print (counter['w'])
print (counter['x'])
print (counter['y'])
print (counter['z'])

results from my updated code:

28042
3064
9280
12192
45763
3434
5143
3523
24633
1107
328
16641
8817
23809
18195
9202
3611
23139
25219
25990
19636
5302
465
1396
1257
473

Answer 3

Have you tried something like the following?

file = open("myFile.txt", "r")
data = file.read()
number_of_characters = len(data)
print('Number of characters in text file : {}'.format(number_of_characters))
file.close()