Python slučka cez dataframe
Príklady kódu
pandy slučka cez riadky
for index, row in df.iterrows():
print(row['c1'], row['c2'])
Output:
10 100
11 110
12 120iterate nad riadkami 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'])python slučka cez stĺpec v dataframe
# Iterate over two given columns only from the dataframe
for column in empDfObj[['Name', 'City']]:
# Select column contents by column name using [] operator
columnSeriesObj = empDfObj[column]
print('Colunm Name : ', column)
print('Column Contents : ', columnSeriesObj.values)
vytváranie dátového rámca v Pythone pomocou slučky
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 2dataframe pre loop
import pandas as pd
# Define a dictionary containing students data
data = {'Name': ['Ankit', 'Amit', 'Aishwarya', 'Priyanka'],
'Age': [21, 19, 20, 18],
'Stream': ['Math', 'Commerce', 'Arts', 'Biology'],
'Percentage': [88, 92, 95, 70]}
# Convert the dictionary into DataFrame
df = pd.DataFrame(data, columns = ['Name', 'Age', 'Stream', 'Percentage'])
print("Given Dataframe :\n", df)
print("\nIterating over rows using iterrows() method :\n")
# iterate through each row and select
# 'Name' and 'Age' column respectively.
for index, row in df.iterrows():
print (row["Name"], row["Age"]) Podobné stránky
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