(Chilkat2-Python) CSV Append a Column with Values

See more CSV Examples

Append an additional column and initialize with a value.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import chilkat2

# First initialize the CSV with content.  

# permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round
# lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b
# mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed
# flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a
# infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a
# gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed

bCrlf = True
sb = chilkat2.StringBuilder()
sb.AppendLine("permalink,company,numEmps,category,city,state,fundedDate,raisedAmt,raisedCurrency,round",bCrlf)
sb.AppendLine("lifelock,LifeLock,,web,Tempe,AZ,1-May-07,6850000,USD,b",bCrlf)
sb.AppendLine("mycityfaces,MyCityFaces,7,web,Scottsdale,AZ,1-Jan-08,50000,USD,seed",bCrlf)
sb.AppendLine("flypaper,Flypaper,,web,Phoenix,AZ,1-Feb-08,3000000,USD,a",bCrlf)
sb.AppendLine("infusionsoft,Infusionsoft,105,software,Gilbert,AZ,1-Oct-07,9000000,USD,a",bCrlf)
sb.AppendLine("gauto,gAuto,4,web,Scottsdale,AZ,1-Jan-08,250000,USD,seed",bCrlf)

csv = chilkat2.Csv()

csv.HasColumnNames = True
success = csv.LoadFromString(sb.GetAsString())

# Show the initial CSV:
print(csv.SaveToString())
print("----")

# Now let's add a new rightmost column.
numColumns = csv.NumColumns
numRows = csv.NumRows

# Set the column name.
columnIdx = numColumns
csv.SetColumnName(columnIdx,"new_column")

# Add the column to each row.
i = 0
while i < numRows :
    csv.SetCell(i,columnIdx,"newData")
    i = i + 1

# Show the updated CSV:
print(csv.SaveToString())