Python converting string "1+2" to float
Question:
I’m beginner with Python, and I have problem with reading data from table.
Program can’t convert string that contains addition of two numbers to float.
I get error could not convert string to float: '6.8 + 3.9'
I’m converting with this command
df['ScreenSize'].astype(np.float)
Is there any way to fix this?
Answers:
The eval function would be a perfect solution here. If you write eval(df['ScreenSize'].astype(str), then python will attempt to treat the value returned by df['ScreenSize'] as a python expression and evaluate it. If successful, the eval function will return the result.
I’m beginner with Python, and I have problem with reading data from table.
Program can’t convert string that contains addition of two numbers to float.
I get error could not convert string to float: '6.8 + 3.9'
I’m converting with this command
df['ScreenSize'].astype(np.float)
Is there any way to fix this?
The eval function would be a perfect solution here. If you write eval(df['ScreenSize'].astype(str), then python will attempt to treat the value returned by df['ScreenSize'] as a python expression and evaluate it. If successful, the eval function will return the result.