python empty dataframe

1# Basic syntax:
2import pandas as pd
3empty_dataframe = pd.DataFrame()
4
5# Create empty dataframe with column names
6empty_dataframe = pd.DataFrame(columns=['your', 'column', 'names'])
7
8# Create empty dataframe with row names
9empty_dataframe = pd.DataFrame(index=['your', 'row', 'names'])

1newDF = pd.DataFrame() #creates a new dataframe that's empty
2newDF = newDF.append(oldDF, ignore_index = True) # ignoring index is optional
3# try printing some data from newDF
4print newDF.head() #again optional 

1df.empty == True

1column_names = ["a", "b", "c"]
2df = pd.DataFrame(columns = column_names)

1df = pd.DataFrame(columns=['a', 'b', 'c'])

1# Create Empty DataFrame with column names
2df = pd.DataFrame(columns=['species','name','age'])
3df.loc[1] = ['dog','Fido','3']  # Populate Row at index 1 (row 1)
4df.loc[2] = ['cat','Felix','2'] # Populate Row at index 2 (row 2)
5print(df) 
6# Output:
7#   species   name age
8# 1     dog   Fido   3
9# 2     cat  Felix   2