Category: Python Answers

Sometimes, we want to create multiple dataframes in loop with Python Pandas.

In this article, we’ll look at how to create multiple dataframes in loop with Python Pandas.

How to create multiple dataframes in loop with Python Pandas?

To create multiple dataframes in loop with Python Pandas, we can us dictionary comprehension.

For instance, we write

d = {name: pd.DataFrame() for name in companies}

to create a dict with data frames as values by looping through each entry in companies and using each companies entry as the key.

Conclusion

To create multiple dataframes in loop with Python Pandas, we can us dictionary comprehension.

Sometimes, we want to fix sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 74 supplied with Python.

In this article, we’ll look at how to fix sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 74 supplied with Python.

How to fix sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 74 supplied with Python?

To fix sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 74 supplied with Pythonm we should make sure we call execute with a tuple.

For instance, we write

cursor.execute('INSERT INTO images VALUES(?)', (img,))

to call execute with a SQL string and a tuple.

We make the 2nd argument a tuple by putting a comma after img since it only has one item.

Conclusion

To fix sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 74 supplied with Pythonm we should make sure we call execute with a tuple.

Sometimes, we want to convert seconds to hours, minutes and seconds with Python.

In this article, we’ll look at how to convert seconds to hours, minutes and seconds with Python.

How to convert seconds to hours, minutes and seconds with Python?

To convert seconds to hours, minutes and seconds with Python, we can use the timedelta function.

For instance, we write

import datetime

d = str(datetime.timedelta(seconds=666))

to create a timedelta object by calling datetime.timedelta with the seconds argument set to the number of seconds.

Then we convert it to a string with str to get the timedelta in hours:minutes:seconds format.

Conclusion

To convert seconds to hours, minutes and seconds with Python, we can use the timedelta function.

Sometimes, we want to subtract a day from a date with Python.

In this article, we’ll look at how to subtract a day from a date with Python.

How to subtract a day from a date with Python?

To subtract a day from a date with Python, we can use a timedelta object.

For instance, we write

from datetime import datetime, timedelta
    
d = datetime.today() - timedelta(days=days_to_subtract)

to subtract days_to_subtract days from today by creating a timedelta object with timedelta and then subtracting that from datetime.today().

Conclusion

To subtract a day from a date with Python, we can use a timedelta object.

Sometimes, we want to import the class within the same directory or sub directory with Python.

In this article, we’ll look at how to import the class within the same directory or sub directory with Python.

How to import the class within the same directory or sub directory with Python?

To import the class within the same directory or sub directory with Python, we can import as a relative or absolute import.

For instance, we write

from .user import User

to import the User class from the user module same directory as the current script.

Conclusion

To import the class within the same directory or sub directory with Python, we can import as a relative or absolute import.