On 18/04/17 00:36, Marilyn Davis wrote:
> #!/usr/bin/env python3
> """
> Hello Tutors,
>
> I can't figure out why the FillWithStars() function puts Canopus in the db
> twice.
>
> What am I missing?
I don;t know but I converted your script into the more
conventional form and it worked. it was the fetchall()
line that made the difference... I don't understand
why your code seems to behave oddly, but its too late
to figure out right now, hopefully someone else can
answer... Here is my version:
import os, sqlite3, subprocess
def FillWithStars():
with sqlite3.connect("stars.db") as connection:
cursor = connection.cursor()
cursor.execute("DROP TABLE IF EXISTS brightest")
cursor.execute("""
CREATE TABLE brightest(
name,
constellation,
apparent_magnitude,
absolute_magnitude,
distance)""")
cursor.execute("""INSERT INTO brightest
VALUES("Canopus", "Carina", -0.72, -2.5, 74)""")
stored_stars = cursor.execute("SELECT * FROM BRIGHTEST")
for star in stored_stars:
print('---> ', star)
cursor.execute("INSERT INTO brightest VALUES(?, ?, ?, ?, ?)",
("Arcturus", "Bootes", -0.04, 0.2, 34))
stored_stars = cursor.execute("SELECT * FROM BRIGHTEST")
for star in stored_stars.fetchall():
print(star)
def main():
FillWithStars()
if __name__ == '__main__':
main()
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
Follow my photo-blog on Flickr at:
http://www.flickr.com/photos/alangauldphotos
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