/Python/How to read the first line in a file python

How to read the first line in a file python

f = open("test.txt", 'r')
variable = f.readline(1)
print(variable)

Reading in lines from a file java

private ArrayList<String> readFileLines(String filepath) throws FileNotFoundException, IOException{
  File fp = new File(filepath);
  FileReader fr = new FileReader(fp);
  BufferedReader br = new BufferedReader(fr);

  ArrayList<String> lines = new ArrayList<>();
  String line;
  while((line = br.readLine()) != null) { lines.add(line); }

  fr.close();
  return lines;
}

Python write a list to a file line by line

# attempt #1
f = open("Bills.txt", "w")
f.write("\n".join(map(lambda x: str(x), bill_List)))
f.close()


# attempt #2
# Open a file in write mode
f = open('Bills.txt', 'w')
for item in bill_List:
f.write("%s\n" % item)
# Close opend file
f.close()

# attempt #3

with open('Bills.txt', 'w') as f:
for s in bill_List:
    f.write(s + '\n')

with open('Bills.txt', 'r') as f:
bill_List = [line.rstrip('\n') for line in f]

# attempt #4
with open('Bills.txt', 'w') as out_file:
out_file.write('\n'.join(
    bill_List))

Source: stackoverflow.com

Similar codes

0 vote270 views1 answer
Can only concatenate str (not "ImageFieldFile") to str
Python
0 vote255 views1 answer
Get just filename without extension from the path python
Python
2 votes273 views1 answer
AttributeError: module 'tensorflow' has no attribute 'random_normal'
Python
4 votes241 views4 answers
Python save output to file
Python
5 votes285 views4 answers
Python open mat file
Python
25 votes244 views6 answers
Fibonacci
Python
0 vote255 views1 answer
Socket python how to check if server alive
Python
94 votes246 views6 answers
For in python
Python
0 vote252 views1 answer
If user_answer==answer: ecpeted index erroe pythin fx
Python
5 votes254 views2 answers
Change index to dataframe pandas
Python