diff --git a/homework_01_python/homework.py b/homework_01_python/homework.py
new file mode 100644
index 0000000000000000000000000000000000000000..61a762339d4b6ba00ebf1b34317109b852cb925b
--- /dev/null
+++ b/homework_01_python/homework.py
@@ -0,0 +1,163 @@
+import math
+from turtle import left
+
+def homework1(article: str):
+    splited = article.split(" ")
+    result = {}
+    for w in [(word.strip(".").strip('?').strip('/')).lower() for word in splited if word != ""]:
+        if w in result:
+            result[w] += 1
+        else:
+            result[w] = 1
+    return result
+
+def homework2():
+    l = [1, 2, 3, 4]
+    cnt = 0
+    for i in l:
+        for j in l:
+            for k in l:
+                if i != j and i != k and j != k:
+                    cnt += 1
+    return cnt  # P(4, 3)
+
+def homework3(l):
+    """Alternative
+    for cmp in [(1000000, 0.01, 39500), (600000, 0.015, 33500), (400000, 0.03, 27500), (200000, 0.05, 17500), (100000, 0.075, 10000), (0, 0.1, 0)]:
+        if l > cmp[0]:
+            return (l - cmp[0]) * cmp[1] + cmp[2]
+    """
+    res = 0
+    if l >= 1000000:
+        res += (l - 1000000) * 0.01
+        l = 1000000
+    if l >= 600000:
+        res += (l - 600000) * 0.015
+        l = 600000
+    if l >= 400000:
+        res += (l - 400000) * 0.03
+        l = 400000
+    if l >= 200000:
+        res += (l - 200000) * 0.05
+        l = 200000
+    if l >= 100000:
+        res += (l - 100000) * 0.075
+        l = 100000
+    res += l * 0.1
+    return res
+
+def homework4():
+    for i in range(9):
+        for j in range(i + 1):
+            print("{}*{}={:>2d}".format(i + 1, j + 1, (i + 1) * (j + 1)), end=" ")
+        print()
+
+def homework5():
+    return sum([-i if i % 2 != 0 else i for i in range(101)]) + 1
+
+def homework6(array):
+    for i in range(len(array) - 1):   
+        for j in range(len(array) - i - 1): 
+                (array[j], array[j + 1]) = (array[j + 1], array[j]) if array[j] > array[j + 1] else (array[j], array[j + 1])
+    return array
+
+def homework7(matrix, find_x):
+    def bin_find(arr, x): 
+        l, r = 0, len(arr) - 1
+        while l <= r:
+            m = (l + r) // 2
+            if arr[m] == x:
+                return m
+            if arr[m] < x:
+                l = m + 1
+            else:
+                r = m - 1
+        return None
+    for row in matrix:
+        if bin_find(row, find_x) is not None:
+            return True
+    return False
+
+def homework8():
+    result = []
+    for i in range(1, 1000):
+        d = [1]
+        for j in range(2, int(math.sqrt(i))+1):
+            if i % j == 0:
+                d.append(j)
+                d.append(i // j)
+        if sum(d) == i:
+            result.append(i)
+    return result
+
+def homework9(n):
+    appear = [n]
+    while True:
+        n = sum([int(c) ** 2 for c in str(n)])
+        if n == 1:
+            return True
+        if n in appear:
+            return False
+
+def homework10(nums, k):
+    for i in range(len(nums)):
+        for j in range(i):
+            if (i - j >= 2) and (sum(nums[j:i]) % k == 0):
+                return True
+    return False
+
+def homework11(s):
+    appear = []
+    for c in s:
+        if c in appear:
+            return False
+        else:
+            appear.append(c)
+    return True
+
+def homework12(s):
+    dict = {c: 0 for c in "abcdefghijklmnopqrstuvwxyz"}
+    for c in s:
+        dict[c] += 1
+    return min(dict["b"], dict["a"], dict["l"] // 2, dict["o"] // 2, dict["n"])
+
+def homework13():
+    import random
+    return ["".join([random.choice("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789") for i in range(11)]) for j in range(20)]
+
+def homework14(directory):
+    import os
+    result = []
+    def find(root):
+        for i in os.listdir(root):
+            if os.path.isdir(os.path.join(root, i)):
+                find(os.path.join(root, i))
+            elif i.split('.')[-1] == "dll":
+                result.append(os.path.join(root, i))
+    return find(directory)
+
+def homework15(directory):
+    import os
+    dict = {"c":0, "py":0}
+    for i in os.listdir(directory):
+        if i.split('.')[-1] in dict:
+            dict[i.split('.')[-1]] += open(os.path.join(directory, i), 'r').readlines().__len__()
+    return dict
+
+
+if __name__ == "__main__":
+    # print(homework1("One is always on a strange road, watching strange scenery and listening to strange music. Then one day, you will find that the things you try hard to forget are already gone. "))
+    # print(homework2())
+    # print(homework3(1919810))
+    # homework4()
+    # homework5()
+    # print(homework6([1, 10, 4, 2, 9, 2, 34, 5, 9, 8, 5, 0]))
+    # print(homework7([[1, 4, 7, 11, 15],[2, 5, 8, 12, 19],[3, 6, 9, 16, 22],[10, 13, 14, 17, 24],[18, 21, 23, 26, 30]], 5))
+    # print(homework8())
+    # print(homework9(20))
+    # print(homework10([23,2,6,4,7], 6))
+    # print(homework11("1232"))
+    # print(homework12("loonbalxballpoon"))
+    # print(homework13())
+    # print(homework14("/path/to/dir"))
+    pass
\ No newline at end of file
diff --git a/homework_01_python/name.txt b/homework_01_python/name.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c37492db97820d99be8f4694f6c19748e70d1875
--- /dev/null
+++ b/homework_01_python/name.txt
@@ -0,0 +1,2 @@
+孙彦升
+2021204551
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