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import pandas as pd
import xmltodict
from sklearn.model_selection import train_test_split
import glob
import sys
import os
filelist = glob.glob('translate_dataset/*.tsv')
data = pd.DataFrame()
for tsvfile in filelist:
tmp = pd.read_csv(tsvfile, sep='\t')
tmp.columns=['source','target']
tmp['rev_source'] = tmp['target']
tmp['rev_target'] = tmp['source']
path = tsvfile.split("/")
source = path[1][0:3]
target = path[1][3:6]
prefix = f"{source}_{target}: "
tmp['source'] = prefix + tmp['source']
rev_prefix = f"{target}_{source}: "
tmp['rev_source'] = rev_prefix + tmp['rev_source']
data = pd.concat([data,tmp])
#Shuffle
data = data.sample(frac=1).reset_index(drop=True)
# Add both directions
original = data[['source','target']]
reverse = data[['rev_source','rev_target']]
reverse.columns=['source','target']
data = pd.concat([original,reverse])
#remove the source prefix
data['source'] = data['source'].str[4:]
data = data.sample(frac=1).reset_index(drop=True)
# Train - test - dev
train, test = train_test_split(data, test_size=0.2)
test, dev = train_test_split(test, test_size=0.5)
# Write the datasets to disk
test.to_csv('tsv_all_target/test.tsv', index=False, header=False, sep='\t')
dev.to_csv('tsv_all_target/dev.tsv', index=False, header=False, sep='\t')
# Add the language detection to the training dataset
filelist = glob.glob('langid/langid_datafiles/*train.tsv')
print(len(train))
for tsvfile in filelist:
tmp = pd.read_csv(tsvfile, sep='\t')
tmp.columns=['source','target']
train = pd.concat([train,tmp])
data = data.sample(frac=1).reset_index(drop=True)
print(len(train))
train.to_csv('tsv_all_target/train.tsv', index=False, header=False, sep='\t')
print("Finished")
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