empty dataframe error in python code example

Example 1: empty dataframe

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

Example 2: how to check for empty dataframe

df_empty = pd.DataFrame({'A' : []})
df_empty.empty # True