了解Collection模块，编写程序以查询给定列表中最常见的元素。
题目说明：
输入：language = [‘PHP’, ‘PHP’, ‘Python’, ‘PHP’, ‘Python’, ‘JS’, ‘Python’, ‘Python’,‘PHP’, ‘Python’]
输出：Python
"""
Input file
language = ['PHP', 'PHP', 'Python', 'PHP', 'Python', 'JS', 'Python', 'Python','PHP', 'Python']
Output file
Python
"""
def most_element(language):
""" Return a list of lines after inserting a word in a specific line. """
def most_element(language):
""" Return a list of lines after inserting a word in a specific line. """
count = 0
unique = set(language)
for u in unique:
if language.count(u) > count:
count = language.count(u)
max_elem = u
return max_elem
language = ['PHP', 'PHP', 'Python', 'PHP', 'Python', 'JS', 'Python', 'Python','PHP', 'Python']
print(most_element(language))
'Python'