I have learned about the working of for loop and all. I decided to pass a double value inside the for loop. The code looks like:
name = 'dfsdf'
for index,string in name:
print index
When I run the code it give me error like
ValueError: need more than 1 value to unpack
When I have added a single value it works just fine. Why does it throws an error when I used two names? Can double values be passed with for statement in python?
Can double values be passed with for statement in python?
Yes, but the sequence you're iterating over must contain elements which themselves contain two elements apiece. For example, [(1,2),(3,4),(5,6)]. Ordinary strings don't fit the bill, but the return value of enumerate does.
>>> name = 'dfsdf'
>>> for index,string in enumerate(name):
... print index
...
0
1
2
3
4
>>> for a,b in [(1,2),(3,4),(5,6)]:
... print a
...
1
3
5
for index, string in [(1,2), (3,4), (5,6)]: The for loop iterates over the list of tuples, and on each iteration a tuple is unpacked into index and string.