How to limit the parameter to a specific number when it's taking in list?

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def is_triangle (a,b,c):
    if (a + b) >= c and  (c + b) >= a and (b+c) >= a:
        return 1
        return 0 

tri = open('triangles.txt','r')
tri_2 = tri.readlines()
input_numbers = list(map(lambda i: int, tri_2))
ans_list = []
result = is_triangle (*input_numbers)
print(" ")
print(*ans_list, sep = " ")

The goal of program is to take a list from a text file and return 1 or 0 from the function is_triangle, 1 meaning that it is a triangle and 0 meaning it's not. There are probably other problems with my code. But the main problem is that I received the message TypeError: is_triangle() takes 3 positional arguments but 25 were given. So I realized that the parameters are taking in too many arguments. I was wondering if there was a way to limit the number of arguments from a list.

403 203 586
794 919 542
510 924 453
258 116 158
1316 2613 671
721 369 1725
493 929 1177
747 606 834

Another thing that I realized was that the text file is creating a list within a list.

Let's take a look at what is happening in these lines:

tri = open('triangles.txt','r')
tri_2 = tri.readlines()

If you examine what is in tri_2, you should see something like this:

tri_2[0] = "403 203 586"
tri_2[1] = "794 919 542"

This means that tri_2 will have a size of 25 (or however many lines there are in your file), making input_numbers also have 25 entries, and then you end up passing 25 arguments to is_triangle.

As others have pointed out, you should instead go line by line, extract the numbers from each line, then call is_triangle. It should be similar to this:

ans_line = []
for line in tri_2:
    split_line = line.split()
    input_numbers = map(int, split_line)
    result = is_triangle(*input_numbers)

How to Limit Range Allowed in Numbers Field on WPForms, Do you need to know how to limit the range allowed in the Numbers Field with to add min and max attributes to specific Numbers field in WPForms. a minimum value of 23 and a maximum value of 40 to any Numbers field  I want to limit a number to be within a certain range. Currently, I am doing the following: This keeps it within minN and maxN, but it doesn't look very nice. How could I do it better? PS: FYI, I am using Python 2.6. def clamp (n, minn, maxn): return min (max (n, minn), maxn) slightly improves readability with arguments in the same order.

Read and process line-by line:

with open('triangles.txt','r') as infile:
    for line in infile:

The meaning of a limit - An approach to calculus, LIMITS. A sequence of rational numbers. The limit of a variable. Left-hand as a limit (a number not a term in the sequence), if, beginning with a certain term vn,  Optional. It is used in the SELECT LIMIT statement so that you can order the results and target those records that you wish to return. ASC is ascending order and DESC is descending order. LIMIT number_rows It specifies a limited number of rows in the result set to be returned based on number_rows. For example, LIMIT 10 would return the first 10 rows matching the SELECT criteria.

If you change your is_triangle to take in a list then unpack it you could just then read your file into a list of lists, convert those to sublists into ints, and then pass each sublist i.e [403, 203, 586] into is_triangle

def is_tri(x):
    a, b, c = x
    if (a + b) >= c and  (c + b) >= a and (b+c) >= a:
        return 1
        return 0

with open('triangles.txt') as f:
    content = [line.split() for line in f]

content = [list(map(int, i)) for i in content]
ans_list = [is_tri(i) for i in content]
print(' ')
print(*ans_list, sep = ' ')
# 1 1 1 1 1 0 1 1

Limit Order Book Dynamics and Asset Liquidity, minimizing the information criterion ascertains the order of the parameter set. approaches indicate the same number of orders, the set of parameters can be  Hi , Is there a maximum number of values that a parameter is able to have? Specifically, I'm interested in creating either a static parameter or dynamic parameter that has a very long list of possible values from a database.

So the lines of your textfile consist of 3 numbers separated by white spaces and you want to read the file, apply the is_triangle function on each line so that the output is consists of a sequence of zeroes and ones.

There are many ways you can achieve this. First, I would modify the function as follows:

def is_triangle (row):
    if (row[0] + row[1]) >= row[2] and  (row[0] + row[2]) >= row[1] and (row[1]+row[2]) >= row[1]:
        return 1
        return 0  

""" I would read all the text file into one big list
    This might be computationally expensive.

1. Using list and map

res = []
with open('triangle.txt', 'r') as lines:
    for line in lines:
        res.append([int(i) for i in line.split()])

result = list(map(is_triangle, res))
>>>[1, 1, 1, 1, 0, 0, 1, 1]
  1. Using the apply method of pandas dataframes. I think this is what you may want to do with large text files. We apply the function on every row.

     data = pd.read_table('triangle.txt', names = list('abc'), delimiter= '\s', engine = 'python')
         a     b    c
     0  403  203    586
     1  794  919    542
     2  510  924    453
     3  258  116    158
     4  1316 2613   671
     data['IsTriangle'] =data.apply(is_triangle, axis = 1)
         a    b      c  IsTriangle
     0  403   203   586    1
     1  794   919   542    1
     2  510   924   453    1
     3  258   116   158    1
     4  1316  2613  671    0

The $limit Parameter, The $limit parameter controls the total number of rows returned, and it defaults if the aggregation reduces a result set from 10,000 records to 100, the $limit is  109. You can specify the min and max attributes, which will allow input only within a specific range. <!-- equivalent to maxlength=4 --> <input type="number" min="-9999" max="9999">. This only works for the spinner control buttons, however.

Precalculus with Limits, For instance, in Example 3, when you substitute the test value into the factored The solution set of x2 2x 4 > 0 consists of the entire set of real numbers, In other  Release all the keys. Right-click one of the row headings to open the contextual menu. Select Hide. The worksheet now shows only the data in rows 1 through 30. Click the header for column AA and repeat steps 2 and 3 (using the right arrow key instead of the down arrow key) to hide all columns after column Z.

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  • result = is_triangle (*input_numbers[:3])? That will only consider the 1st 3 numbers in the list.
  • Your issue is that you’re doing all lines in one call to is_triangle. (Your map is also wrong: your lambda always returns int itself.)
  • Thank you, very much. Now the problem is that the code is taking a list that within a list as one argument. Is it possible for the function to take the list that is within the list as three arguments for the parameters?
  • One of your triangle inequalities is repeated.
  • @DavisHerring True, that's simpler. Edited.