Write specific rows from pandas dataframe to csv file

[pradeepkumarbe]

Below is my CSV file

Territory  NoOfCustomer
D00060     10
D00061     20
D00065     70
D00067     90

I have to create a Unique Id based on Number of NoOfCustomer like If NoOfCustomer <=50
then I have to create 10 different Unique ID for Territory D00060 and 10 different Unique ID for Territory D00061.

Here I read my csv file in pandas like

csv_file = 'cust_valid.csv'
df=pd.read_csv(csv_file,delimiter="|")

Filtered having customers <= 50

low_dense = df['NoOfCustomer'] <=50

And then iterted low_dense like

for idx, item in df[low_dense].iterrows():

???

Now I will have to create 10 records means 10 unique ID using UUID for each territory having customers <=50? I am very new to python help me out!!