check if data is present in a column python code example
Example 1: check if column exists in dataframe
if 'A' in df.columns:
Example 2: check if column exists in dataframe python
if 'A' in df:
Example 3: pandas check if any of the values in one column exist in another
df["exists"] = df.drop("target", 1).isin(df["target"]).any(1)
print(df)
target A B C exists
0 cat bridge cat brush True
1 brush dog cat shoe False
2 bridge cat shoe bridge True