如何遍历列表？

Question

I'm super new to Python, I want to do a simple loop that iterates through a list which has the name of the months:

I tried For loops like:

months=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]
Max=[]
hours=[]
for m in months:
    time=m.count()/96  # when it goes to "Jan" it has 2976 elements
    for i in range(1,int(time)+1): 
        a=Rdata.m[Rdata.m['Day'] == i].dem.max() # Rdata.Jan is a df which has columsn Day and dem
        b=Rdata.m.loc[Rdata.m['dem']== a,'Time']
    Max.append(a)
    hours.append(b)

Just to add more information

I created a list :

month= (Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec)

in which

Jan = Series which contains  2976 elements

And I keep getting the error "count() takes at least 1 argument (0 given)"

Answer 1

Count is used for counting the number of elements with the specified value.for example: fruits = ['apple', 'banana', 'cherry']

x = fruits.count("cherry")

You should be using len() instead of count there

time=len(m)/96

Answer 2

When you enclose the values in double quotes or single quotes they are literal strings not series variables.

Assuming that your code has defined the series from Jan to Dec, you need to create the list months of the series like this:

months=[Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec]