I need to write the following values from a list to a CSV.
my_list[0]
March,'1.800931853','1.843227636','1.861992226','1.880196477','1.907555762','1.853076585','1.770560438','1.837108443','1.867213313','1.849542335','1.913505573','2.023772836','1.899717681'
my_list[1]
July,'10.809832','10.57868801','9.571741038','8.850265221','9.154250034','9.172628705','10.35004201','9.36852657','8.689944331','10.1053826','9.18756731','8.541507801','8.054240996'
I have tried the following:
def saveData(my_list):
file_name = 'months.csv'
with open(file_name, 'w') as f:
writer = csv.writer(f)
for row in zip(my_list):
writer.writerows([row])
f.close()
The CSV should look like this with each value in a separate cell
March 1.800931853 1.843227636 1.861992226 1.880196477 1.907555762 1.853076585 1.770560438 1.837108443 1.867213313 1.849542335 1.913505573 2.023772836 1.899717681 2.152980753
This works with Python 3:
import csv
def save_data(my_list):
file_name = 'months.csv'
with open(file_name, 'w') as myfile:
wr = csv.writer(myfile, quoting=csv.QUOTE_NONE, delimiter=' ')
for row in my_list:
wr.writerow(map(str, row))
#example:
save_data([["March", 1.2, 1.5], ["July", 2.3, 4.5678, 9.101]])
Related
I wanna ask how do I print the number of dentists respective in 2012 from the CSV file.
import csv
csv_file = open('project.csv' , 'r')
data_file = csv.reader(csv_file)
def opt_a():
next(data_file)
for row in data_file:
i = row[1:]
print(i)
opt_a()
This what I have tried but I will only be able to print out in rows.
Sample of data :
year,Private Dental Specialists,Private General Dental Practitioners,Public Dental Specialists,Public General Dental Practitioners
2008,116,864,47,268
2009,180,863,74,246
2010,185,874,87,267
2011,199,961,77,241
2012,203,1012,86,271
2013,219,1192,88,308
2014,216,1219,96,348
2015,215,1326,102,347
2016,219,1425,106,380
2017,232,1516,112,365
2018,189,1579,113,412
2019,237,1644,130,379
In your for loop, simply check if the first value of your row is 2012 :
import csv
csv_file = open('project.csv' , 'r')
data_file = csv.reader(csv_file)
def opt_a():
next(data_file)
for row in data_file:
if row[0] == "2012":
i = row[1:]
print(i)
opt_a()
This is code
I want only first item word is 'A' data stored in newFile.csv file. How i can Do?
student_databaseOne = 'firstFile.csv'
NewFile = 'NewFile.csv'
letter = 'A'
with open(student_databaseOne, "r", encoding="utf-8") as f:
reader = csv.reader(f)
for row in reader:
for item in row:
if item == 'A':
for row in reader:
with open(NewFile, "w", encoding="utf-8") as f:
writer = csv.writer(f)
writer.writerows(row)
This script will read the firstFile.csv row by row, and when the first item is equal to A it stores the row into NewFile.csv:
import csv
with open('firstFile.csv', 'r') as f_in, open('NewFile.csv', 'w') as f_out:
reader = csv.reader(f_in, delimiter=',', quotechar='"')
writer = csv.writer(f_out, delimiter=',',quotechar='"', quoting=csv.QUOTE_MINIMAL)
for first, *rest in reader:
if first == 'A':
writer.writerow([first, *rest])
I'm trying to print certain values into a CSV from a list I'm passing through. Here is my function:
current = datetime.datetime.now() #defining datetime for use in function
def write_csv(custody_parts):
with open((current.strftime("%m_%d_%y_%H_%M_%S")) + '.csv', 'w', newline='') as csvfile:
csvfile = io.StringIO()
fieldnames = ['serial', 'user', 'time']
writer = csv.DictWriter(csvfile, extrasaction='ignore', fieldnames=fieldnames)
writer.writeheader()
writer.writerows(custody_parts)
csvfile.getvalue()
print(csvfile.getvalue())
return(csvfile.getvalue())```
Then I call it with the list I'm trying to pass through:
write_csv(parts)
and it creates the file: 06_06_18_12_13_53.csv
and prints to the screen:
serial,user,time
serial1,user1,date1
serial2,user2,date2
serial3,user3,date3
but the file it creates is empty, so it isn't writing to the file it is creating.
Can someone point me in the right direction?
Thanks ~
EDIT:
I ended up going with this instead:
def write_csv(custody_parts):
current = datetime.datetime.now()
with open((current.strftime("%m_%d_%y_%H_%M_%S")) + '.csv', 'w', newline='') as csvfile:
custodywriter = csv.writer(csvfile, delimiter=',', quoting=csv.QUOTE_MINIMAL)
custodywriter.writerow(['serial', 'user', 'time'])
for i in custody_parts:
x = [i["serial"],i["user"],i["time"]]
custodywriter.writerow(x)
custodywriter.writerow(["End of Report"])
Been having trouble with using variables in a new dirpath when using with open to create a csv file.
I can create the dirpath fine along with the .csv filename and add them with os.path.join .
But when i try to use the entire correctly formatted path in the open statement it is adding an extra backslash next to the current backslashes in the string?? could not find any documentation on why this may be happening.
This is the error
FileNotFoundError: [Errno 2] No such file or directory: 'Logs\\14-05-2018\\dfg.csv'
If i simply write the following i can create the subfolders and csvs no problemo.
with open(Logs\1234\asd.csv) 'w') as csvfile:
So this is what i am getting an error in on line 43 which is the with open(csvlogPath, 'w') as csvfile: I have tried with r instead of 'w' and same problem. At a loss after two days time to ask you guys. :)
import csv, os.path
#Get and create csv filename string
logFN = input("Please name your trade.\n#")
suffix = '.csv'
csvname = logFN + suffix
#Create dir name string
t = time.strftime("%d-%m-%Y-%H%M")
dirsname = os.path.join('Logs', t)
csvlogPath = os.path.join(dirsname,csvname)
with open(csvlogPath, 'w') as csvfile:
filewriter = csv.writer(csvfile, delimiter=',', lineterminator='\n', quotechar='|', quoting=csv.QUOTE_MINIMAL)
filewriter.writerow(['get', 'new', 'values', 'later'])
with open(csvlogPath, 'w') as f:
reader = csv.reader(f)
# read file row by row
rwsCount = 0
for row in reader:
print (row, rwsCount)
rwsCount += 1
line_number = rwsCount-1
print (line_number)
with open(csvlogPath, 'w') as f:
mycsv = csv.reader(f)
mycsv = list(mycsv)
text = mycsv[line_number][0]
print (text)
you need to make the dirs in python you can use os.makedirs(path) like so:
csvlogPath = os.path.join(dirsname,csvname)
os.makedirs(os.path.dirname(csvlogPath), exist_ok=True)
with open(csvlogPath, 'w') as csvfile:
filewriter = csv.writer(csvfile, delimiter=',', lineterminator='\n', quotechar='|', quoting=csv.QUOTE_MINIMAL)
filewriter.writerow(['get', 'new', 'values', 'later'])
With open, use 'r' to read and 'w' to write so you need to change the next to opens to:
with open(csvlogPath, 'r') as f:
reader = csv.reader(f)
# read file row by row
rwsCount = 0
for row in reader:
print (row, rwsCount)
rwsCount += 1
line_number = rwsCount-1
print (line_number)
with open(csvlogPath, 'r') as f:
mycsv = csv.reader(f)
mycsv = list(mycsv)
text = mycsv[line_number][0]
test this code :
import csv, os.path
#Get and create csv filename string
import time
logFN = input("Please name your trade.\n#")
suffix = '.csv'
csvname = logFN + suffix
#Create dir name string
t = time.strftime("%d-%m-%Y-%H%M")
dirsname = os.path.join('Logs', t)
###########################
if not os.path.exists(dirsname):
os.makedirs(dirsname)
###########################
csvlogPath = os.path.join(dirsname,csvname)
with open(csvlogPath, 'w') as csvfile:
filewriter = csv.writer(csvfile, delimiter=',', lineterminator='\n', quotechar='|', quoting=csv.QUOTE_MINIMAL)
filewriter.writerow(['get', 'new', 'values', 'later'])
with open(csvlogPath, 'r') as f:
reader = csv.reader(f)
# read file row by row
rwsCount = 0
for row in reader:
print (row, rwsCount)
rwsCount += 1
line_number = rwsCount-1
print (line_number)
with open(csvlogPath, 'r') as f:
mycsv = csv.reader(f)
mycsv = list(mycsv)
text = mycsv[line_number][0]
print (text)
I have some python code here with the aim of taking user input to target a specific row of a CSV and then to overwrite it if a certain letter matches.
import csv
line_count = 0
marked_item = int(input("Enter the item number:"))
with open("items.csv", 'r') as f:
reader = csv.reader(f, delimiter=',')
title = next(reader)
print(title)
print(title[3])
lines = []
for line in reader:
if title[3] == 'a':
line_count += 1
if marked_item == line_count:
title[3] = 'b'
lines.append(line)
with open("items.csv", 'w', newline='') as f:
writer = csv.writer(f, delimiter=',')
writer.writerow(title)
writer.writerows(lines)
This code works almost the way I want it to but it is unable to edit any other row but the first. an example of the output this code is:
red,12.95,2,b #note, this change from 'a' to 'b'
blue,42.5,3,a #How can I target this row and change it?
green,40.0,1,a
the problem I then have it targeting another row like row 'blue,42.5,a'. My code is unable to target and then change the value 'a' to 'b'.
you're iterating on line and you change title. Do this:
for line in reader:
if len(line)>3 and line[3] == 'a':
line_count += 1
if marked_item == line_count:
line[3] = 'b'
lines.append(line)
and drop the title = next(reader) since you don't have a title.
full fixed code for input csvs that don't have a title line:
import csv
line_count = 0
marked_item = int(input("Enter the item number:"))
with open("items.csv", 'r') as f:
reader = csv.reader(f, delimiter=',')
lines = []
for line in reader:
if len(line)>3 and line[3] == 'a':
line_count += 1
if marked_item == line_count:
line[3] = 'b'
lines.append(line)
with open("items.csv", 'w', newline='') as f:
writer = csv.writer(f, delimiter=',')
writer.writerow(title)
writer.writerows(lines)