for loop pandas dataframe code example

Example 1: iterate over rows dataframe

df = pd.DataFrame([{'c1':10, 'c2':100}, {'c1':11,'c2':110}, {'c1':12,'c2':120}])
for index, row in df.iterrows():
    print(row['c1'], row['c2'])

Example 2: creating data frame in python with for loop

df = pd.DataFrame(columns=["A", "B"])

for i in range(2):
    this_column = df.columns[i]
    df[this_column] = [i, i+1]

print(df)

#OUTPUT
#  A B
#0 0 1
#1 1 2

Example 3: python - iterate with the data frame

# Option 1
for row in df.iterrows():
    print row.loc[0,'A']
    print row.A
    print row.index()

# Option 2
for i in range(len(df)) : 
  print(df.iloc[i, 0], df.iloc[i, 2])