TypeError: unsupported format string passed to tuple.format

Question

I want to display this:

Number Name

1 Jane

2 Linda

3 Vladimir

but when I put row in the last line its giving me an error.

output = cursor.fetchall()

for row in output:
    print("{0:20}\t{1:20}".format("Number", "Name"))
    print("{0:20}\t{1:20}".format(row, row[0]))

You need enumerate here and you need to pull that first print out of the loop. — erip
– erip, Commented Nov 3, 2020 at 23:02

user5297028 · Accepted Answer · 2021-08-12 10:38:26Z

1

Based on my limited testing, Python's f-strings and .format (tested with 3.8) do not support strings like "{:2}".format([0]) (i.e. with arguments of list type). If you do need a list printed out, convert it to str:

rows = [[1, "Jane"], [2, "Linda"], [3, "Vladimir"]]
print("{0:16}{1:8}".format("Number", "Name"))
for row in rows:
    print("{0:<16}{1:8}".format(str(row), row[1]))

Or just pass each element separately:

rows = [[1, "Jane"], [2, "Linda"], [3, "Vladimir"]]
print("{0:8}{1:8}".format("Number", "Name"))
for row in rows:
    print("{0:<8}{1:8}".format(row[0], row[1]))

answered Aug 12, 2021 at 10:38

user5297028

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