So I need to convert a list of lists:

[[1, 3, 5, 7, 9, 11], [2, 4, 6, 8], [1, 2, 3, 4, 10, 20, 30, 40, 50], [-1, -2, -3, -4, -5, -6]]

into separate integer sequences:
Sequence # 1

1 3 5 7 9 11   

Sequence # 2

2 4 6 8  

Sequence # 3

1 2 3 4 10 20 30 40 50   

Sequence # 4

-1 -2 -3 -4 -5 -6  

in a function. So far, I have

def printIntegerSequences(integerSequences):
    for i in len(integerSequences):
        print("Sequence #", i 1,' '.join(str(e) for e in integerSequences[i]))

where integerSequence is the list presented above, but I keep getting this error:

TypeError: 'int' object is not iterable

What am I doing wrong?

CodePudding user response：

Your code:

def printIntegerSequences(integerSequences):
    for i in len(integerSequences):
        print("Sequence #", i 1,' '.join(str(e) for e in integerSequences[i]))

should instead be:

def printIntegerSequences(integerSequences):
    for i in range(len(integerSequences)):
        print("Sequence #", i 1,' '.join(str(e) for e in integerSequences[i]))

or even better yet:

def printIntegerSequences(integerSequences):
    for i, seq in enumerate(integerSequences, start=1):
        print("Sequence #", i,' '.join(str(e) for e in seq))

Relevant documentation:

• ranges;
• enumerate;
• Tutorial: for statements and range.

CodePudding user response：

This seemed to work for me

a = [[1, 3, 5, 7, 9, 11], [2, 4, 6, 8], [1, 2, 3, 4, 10, 20, 30, 40, 50], [-1, -2, -3, -4, -5, -6]]

def printIntegerSequences(integerSequences):
    for i in range(len(integerSequences)):
        print("Sequence #", i 1,' '.join(str(e) for e in integerSequences[i]))

result = printIntegerSequences(a)