在新行上将列表打印为CSV或txt

Question

I'm trying to export some data, taken from an sql database, to a txt- or csv-file. The print statement:

for x in range(len(data)):
        print(data[x]) 

this outputs what I want, every element in a new line

(1, 90, Netherlands, male)
(2,  50, Germany, Female)

etc.. Now, when I try putting this to a text file it just adds everything in 1 long line, all the info pasted behind each other just like a regular print(data) command.

I posted my code below so you get the context

sql = 'SELECT * FROM batch'
c.execute(sql)
data = c.fetchall()
list1 = []
addDataToList = list1.append(data)
for x in range(len(data)):
    print(data[x])

    with open('Rapport.txt', mode="w") as output:
    for x in range(len(data)):
        output.write("\n" .join(str(data[x])))

Answer 1

sql = 'SELECT * FROM batch'
c.execute(sql)
data = c.fetchall()
list1 = []
addDataToList = list1.append(data)
for x in range(len(data)):
    print(data[x])

with open('Rapport.txt', mode="w") as output:
    for x in range(len(data)):
        print(str(data[x]), file=output) 

Answer 2

Every element on a new line

Then try this

sql = 'SELECT * FROM batch'
c.execute(sql)
data = c.fetchall()
list1 = []
addDataToList = list1.append(data)
# construct output
outputString = ''
for x in range(len(data)):
   outputString = outputString + str(data[x]) + '\n'
# write output to file
with open('Rapport.txt', mode="w") as output:
   output.write(outputString)

By the way, you're writing to the same file x^2 number of times, with only the last write being visible as you keep overwriting the last write. You should be careful with nested for statements. See the example below:

data = ['1', '90', 'Netherlands', 'male']
result = ''
for x in range(len(data)):
    print(data[x])

    #with open('Rapport.txt', mode="w") as output:
    for x in range(len(data)):
        #output.write("\n" .join(str(data[x])))
        result = result + (data[x] + ' ')

print (str(result))

Output:

1 90 Netherlands male 1 90 Netherlands male 1 90 Netherlands male 1 90 Netherlands male

Answer 3

Use write with \\n to write content to each line.

Ex:

with open('Rapport.txt', mode="w") as output:
    for i in data:
        output.write("{0} \n".format(str(i)))