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Python and CSV read works only in one way

I'm doing the following code that read all the line in a CSV file and after, it reads more information about a row chosen by the user.
This works only the second part print({rows[2]["Name"]})
with open("file.csv", "r", newline="") as a:
csv_reader = csv.DictReader(a)
rows = list(csv_reader)
for row in csv_reader: #to read all the line
x=csv_reader.line_num-3
print(x, row["Name"])
print({rows[2]["Name"]}) #to print the information about line 2
This works only the first part for row in csv_reader:
with open("file.csv", "r", newline="") as a:
csv_reader = csv.DictReader(a)
for row in csv_reader:
x=csv_reader.line_num-3
print(x, row["Name"])
rows = list(csv_reader) #THIS row changed position
print({rows[2]["Name"]})
And the second part has this error: IndexError: list index out of range
How can I solve it? the second part should work because the code alone works.

Create list from csv lines in python

I have a csv file with 2 rows and multiple lines.
import csv
with open('data.csv', 'r') as csv_file:
csv_reader = csv.reader(csv_file)
next(csv_reader)
for row in csv_reader:
print(row[0])
The output is:
row0line0
row0line1
row0line2
...
Is there a way i could further separate the rows into a list of individual cells?
Thanks

As I understand your csv file look like this:
row0line0
row1line1
...
If its possible i should reccomand to change it to:
row0 line0
row1 line1
...
(Add a space between the rows and the lines)
Then you can update your code to the code bellow to print only the rows and create two lists - one that contain the rows and another that contain the lines:
import csv
with open('data.csv', 'r') as csv_file:
csv_reader = csv.reader(csv_file)
next(csv_reader)
rows = []
lines = []
for item in csv_reader:
temp = item[0].split(" ")
rows.append(temp[0])
lines.append(temp[1])
print(temp[0])

If you mean that each row becomes an element of the list that goes this way:
with open('data.csv', 'r') as csv_file:
reader = csv.reader(csv_file)
data_list = [row[0] for row in reader]
Otherwise, if you want to create a list of the first elements of each line, you can do this:
with open('data.csv', 'r') as csv_file:
reader = csv.reader(csv_file)
row0_list = []
for row in reader:
row0_list.append(row[0])
I hope the problem is solved with this explanation.

My understanding is that you are asking to output all the data fields. csv_reader is already separating your rows into a list individual cells!
You current script reads the file one line at a time and prints the first item in each row with this line:
for row in csv_reader:
print(row[0])
Instead of printing row[0], which only prints the first field in the csv row, you can just print the row:
for row in csv_reader:
print(row)
That will output the field lists (from my sample csv):
['r0v0', 'r0v1', 'r0v2']
['r1v0', 'r1v1', 'r1v2']
If you want to print in a nicer format, you can use join:
for row in csv_reader:
print(", ".join(row))
Output:
r0v0, r0v1, r0v2
r1v0, r1v1, r1v2
My csv:
r0v0,r0v1,r0v2
r1v0,r1v1,r1v2

How to fix "row in csv_reader" not working?

I'm reading a two column .csv file of variable length. I have some code written that should be able to read the data bar the first line into an x Data column and a y Data column. Here is the code:
def csvReader(filename):
with open(filename) as csvFile:
csvReader = csv.reader(csvFile, delimiter = ',')
rowCount = sum(1 for row in csvReader)
xData = np.zeros(rowCount)
yData = np.zeros(rowCount)
line_count = 0
firstLine = True
for row in csvReader:
print(row)
if firstLine:
firstLine = False
continue
xData[line_count] = row[0]
yData[line_count] = row[1]
line_count += 1
return xData,yData
It outputs an array of zeros, and the console never shows any printed output, which seems to imply that the entire for loop is getting skipped. Any help on this issue would be appreciated.

You're exhausting the iterator when you do
rowCount = sum(1 for row in csvReader)
You need to rewind the file to read it again.
csvFile.seek(0)

Not able to use for after using csv reader

I am given the task to write a script to check MX records of the given data in the CSV file. I have started by trying checking it using regex and before that I trying to read the CSV file. I would also like to log the progress so I am printing the row number it is on, but whenever I use the cvs_reader object to calculate the row length I am unable to get inside the for loop
import csv
with open('test_list.csv') as csv_file:
csv_reader = csv.reader(csv_file, delimiter=',')
line_count = 0
data = list(csv_reader)
row_count = len(data)
for row in csv_reader:
print({row[2]})
line_count += 1
print('Checking '+ str(line_count) +' of '+ str(row_count))
print('Processed lines :'+str(row_count))
I only get the result as
Processed lines : 40
New at python scripting. Please help
My test_list.csv look like this
fname, lname, email
bhanu2, singh2, bhanudoesnotexist#doesnotexit.com
bhanu2, singh2, bhanudoesnotexist#doesnotexit.com
bhanu2, singh2, bhanudoesnotexist#doesnotexit.com
bhanu2, singh2, bhanudoesnotexist#doesnotexit.com
Total 40 times continued

first thing csv data has nothing to do with this problem,
Solution:
import csv
input_file = open("test_list.csv", "r").readlines()
print(len(input_file))
csv_reader = csv.reader(input_file)
line_count = 0
# data = list(csv_reader)
# row_count = len(data)
for row in csv_reader:
print({row[2]})
line_count += 1
print('Checking ' + str(line_count) + ' of ' + str(len(input_file)))
print('Processed lines :' + str(len(input_file)))
Problem Recognition:
with open('test_list.csv') as csv_file:
csv_reader = csv.reader(csv_file, delimiter=',')
line_count = 0
data = list(csv_reader)
row_count = len(data)
in your code data = list(csv_reader) because of this line you are exhausting your variable. so it won't be able to loop through in your for loop
so for that you can read csv file like
input_file = open("test_list.csv", "r").readlines()
print(len(input_file))
then use csv.reader()

csv.reader returns an iterable, and when you use list(csv_reader) to read all the rows of the CSV, you have already exhausted the iterable, so when you want to iterate through csv_reader again with a for loop, it has nothing left to iterate.
Since you have a complete list of rows materialized in the variable data, you can simply iterate over it instead.
Change:
for row in csv_reader:
to:
for row in data:

How to print specific rows in a CSV files which have a specific value in a specific column?

I am new to python. I have a CSV file which I want to print specific row from it I'd appreciate it if you could give me guidance. for example below table I want to print a Row if record Number is 2:
This image shows an example of my case
I have below code as starter which prints out the headers:
with open(filename, "r") as f:
reader = csv.reader(f, delimiter="\t")
first = next(reader)
print(first[0].split(','))
for row in filename:
print()
Thanks!

your example code seems somewhat confused, I presume the file is actually comma separated not tab delimited. otherwise you wouldn't need to do the first[0].split(',').
assuming that's the case, maybe something like this would work:
with open(filename, "r") as f:
reader = csv.reader(f)
# skip header row
header = next(reader)
for row in reader:
if int(row[0]) == 2:
print(row)
if you're after a specific row number, you could use enumerate to count rows and print when you get to the correct one.

In your for loop check if the record number, which is the 0th column, is == 2:
for row in file:
if row[0] == 2:
print(row)