python - convert a column in a dataframe into a list
myvar_list = df["myvar"].tolist()python - convert a column in a dataframe into a list
myvar_list = df["myvar"].tolist()how to get a dataframe column as a list
import pandas as pd
data_dict = {'one': pd.Series([1, 2, 3], index=['a', 'b', 'c']),
'two': pd.Series([1, 2, 3, 4], index=['a', 'b', 'c', 'd'])}
df = pd.DataFrame(data_dict)
print(f"DataFrame:n{df}n")
print(f"column types:n{df.dtypes}")
col_one_list = df['one'].tolist()
col_one_arr = df['one'].to_numpy()
print(f"ncol_one_list:n{col_one_list}ntype:{type(col_one_list)}")
print(f"ncol_one_arr:n{col_one_arr}ntype:{type(col_one_arr)}")dataframe column in list
In [1]: df = pd.DataFrame({'A': [5,6,3,4], 'B': [1,2,3,5]})
In [2]: df
Out[2]:
A B
0 5 1
1 6 2
2 3 3
3 4 5
In [3]: df[df['A'].isin([3, 6])]
Out[3]:
A B
1 6 2
2 3 3get dataframe column into a list
df_gearME = pd.read_excel('Gear M&Es.xlsx')
df_gearME['ColA'].to_list()list to dataframe columns
import pandas as pd
lst = [1,2,3]
df = pd.DataFrame([lst])
df.columns =['col1','col2','col3']
df
to get this:
col1 col2 col3
0 1 2 3Copyright © 2021 Codeinu
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