import numpy as np
import pandas as pd
import csv
df = pd.read_csv("/data/training/blackfriday.csv")
a = df.isnull().any()
c=0
b=[]
for col in df.columns:
    if a[col] == True:
        c+=1
        b.append([col])
with open("/code/output/output.csv", "w",newline='') as csv_file:
        writer = csv.writer(csv_file, delimiter=',')
        writer.writerow(str(c))
        for i in range(0,len(b)):
            writer.writerow(b[i])
eff8bdaa42dbd35c9189e1ac652c363a6ae9f7a8
<mask token>

<mask token>
for col in df.columns:
    if a[col] == True:
        c += 1
        b.append([col])
with open('/code/output/output.csv', 'w', newline='') as csv_file:
    writer = csv.writer(csv_file, delimiter=',')
    writer.writerow(str(c))
    for i in range(0, len(b)):
        writer.writerow(b[i])

<mask token>
df = pd.read_csv('/data/training/blackfriday.csv')
a = df.isnull().any()
c = 0
b = []
for col in df.columns:
    if a[col] == True:
        c += 1
        b.append([col])
with open('/code/output/output.csv', 'w', newline='') as csv_file:
    writer = csv.writer(csv_file, delimiter=',')
    writer.writerow(str(c))
    for i in range(0, len(b)):
        writer.writerow(b[i])

import numpy as np
import pandas as pd
import csv
df = pd.read_csv('/data/training/blackfriday.csv')
a = df.isnull().any()
c = 0
b = []
for col in df.columns:
    if a[col] == True:
        c += 1
        b.append([col])
with open('/code/output/output.csv', 'w', newline='') as csv_file:
    writer = csv.writer(csv_file, delimiter=',')
    writer.writerow(str(c))
    for i in range(0, len(b)):
        writer.writerow(b[i])

import numpy as np
import pandas as pd
import csv
df = pd.read_csv("/data/training/blackfriday.csv")
a = df.isnull().any()
c=0
b=[]
for col in df.columns:
    if a[col] == True:
        c+=1
        b.append([col])
with open("/code/output/output.csv", "w",newline='') as csv_file:
        writer = csv.writer(csv_file, delimiter=',')
        writer.writerow(str(c))
        for i in range(0,len(b)):
            writer.writerow(b[i])