I have some code like this:
#w = open("blabla.py", "w") is already called
w.write("Button(root, text = %s,command=%s).grid(row=%s,column=%s)\n" % textvalue,buttoncommand,str(rowvalue),str(columnvalue))
However, if I run this, I get the following error:
TypeError: not enough arguments for format string
What is wrong?
Enclose vars into a tuple:
w.write("Button(root, text = %s,command=%s).grid(row=%s,column=%s)\n" % (textvalue,buttoncommand,str(rowvalue),str(columnvalue)))
Or use a better format version:
w.write("Button(root, text = {0},"
"command={1}).grid(row={2},"
"column={3})\n".format(textvalue,
buttoncommand,
str(rowvalue),
str(columnvalue)))
You need to put the format arguments into a tuple (add parentheses):
... % (textvalue,buttoncommand,str(rowvalue),str(columnvalue))
but the % syntax for formatting strings is becoming outdated. Try this:
"'{0}', '{1}', '{2}', '{3}', '{4}'".format(textvalue,buttoncommand,str(rowvalue),str(columnvalue))
If you pass multiple arguments to a format string you need to put them in brackets:
w.write("Button(root, text = %s,command=%s).grid(row=%s,column=%s)\n" % (textvalue,buttoncommand,str(rowvalue),str(columnvalue)))
^ ^
You also might want to take a look at the new format syntax: https://docs.python.org/2/library/string.html#format-examples
