Problem of writing long list of lists file to csv

Tue May 22 06:11:38 EDT 2018

I have a list of lists (177 lists). 
I am trying to write them as file.
I used the following code to write it in a .csv file.
import csv
def word2vec_preprocessing():
 a1=open("/python27/EngText1.txt","r")
 list1=[]
 for line in a1:
 line1=line.lower().replace(".","").split()
 #print line1
 list1.append(line1)
 lst1=list1
 lst2=lst1[:4]
 with open("my_csv.csv","wb") as f:
 writer = csv.writer(f)
 writer.writerows(lst2)
Here it is writing only the first four lists. 
I have searched for help and it seems it is an issue and 
without much of fix. 
Please see the following link. 
https://stackoverflow.com/questions/30711899/python-how-to-write-list-of-lists-to-file
I have now tried pandas and json as follows, but same result. 
my_df = pd.DataFrame(lst2)
 my_df.to_csv('sbb_csv.csv', index=False, header=False)
with open('sbb1.json', 'w') as F:
 # Use the json dumps method to write the list to disk 
 F.write(json.dumps(lst2))
 with open('sbb1.json', 'r') as F:
 B = json.loads(F.read())
 print B
I am using Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:22:17) [MSC v.1500 32 bit (Intel)] on win32
in MS-Windows.
Please suggest what error I may be doing? 
Thanking in advance.