Multiple coverage items for a single file

[larryzju]

Describe the bug
The coverage page shows multiple lines of metrics for a single file

Screenshots

Reason
It seems the remove inside the inner for loop breaks the self.files list

InfraBox/src/pyinfraboxutils/coverage.py

Lines 307 to 316 in 22c18ef

	tmp_files = []
	while self.files != []:
	f1 = self.files.pop(0)
	for f in self.files:
	if f.name == f1.name:
	f1 = f1 + f
	self.files.remove(f)
	tmp_files.append(f1)

A more functional way of doing the same thing is

import itertools, functools
tmp_files = []
get_filename = lambda f: f.name
for _, group in itertools.groupby(sorted(self.files, key=get_filename), key=get_filename):
    tmp_files.append(functools.reduce(lambda a,b : a+b, group))

To Reproduce

class Account(object):
    def __init__(self, name, count):
        self.name = name
        self.count = count

    def __str__(self):
        return "Account[%s] = {%s}" % (self.name, self.count)

    def __add__(self, other):
        if type(other) is not Account:
            raise TypeError()

        if other.name != self.name:
            raise valueError()

        return Account(self.name, self.count + other.count)


accounts = [
        Account('a1', 1),
        Account('a1', 2),
        Account('a1', 3),
        Account('a1', 4),
        Account('a1', 5),
]

temps = []
while accounts != []:
    f1 = accounts.pop(0)

    for f in accounts:
        if f.name == f1.name:
            f1 = f1 + f
            accounts.remove(f)

    temps.append(f1)


for s in temps:
    print(s)

Which outputs

Account[a1] = {7}
Account[a1] = {8}