diff --git a/BOJ/Gold/1053/main.py b/BOJ/Gold/1053/main.py
index d213dab..e5d88b3 100644
--- a/BOJ/Gold/1053/main.py
+++ b/BOJ/Gold/1053/main.py
@@ -6,8 +6,8 @@
 
 def swap(s, idx1, idx2):
     tmp = s[idx2]
-    s = s[:idx2] + s[idx1] + s[idx2 + 1 :]
-    s = s[:idx1] + tmp + s[idx1 + 1 :]
+    s = s[:idx2] + s[idx1] + s[idx2 + 1:]
+    s = s[:idx1] + tmp + s[idx1 + 1:]
     return s
 
 
diff --git a/BOJ/Gold/12851/main.py b/BOJ/Gold/12851/main.py
index e03f273..cc552dc 100644
--- a/BOJ/Gold/12851/main.py
+++ b/BOJ/Gold/12851/main.py
@@ -13,7 +13,8 @@ def BFS(pos):
     while q:
         tmp, t = q.popleft()
         for i in [tmp - 1, tmp + 1, tmp * 2]:
-            if 0 <= i <= 100_000 and (visit[i][0] == -1 or visit[i][0] == t + 1):
+            if 0 <= i <= 100_000 and (
+                    visit[i][0] == -1 or visit[i][0] == t + 1):
                 if visit[i][0] == t + 1:
                     visit[i][1] += visit[tmp][1]
                 else:
diff --git a/BOJ/Gold/12865/Legacy/ver1.py b/BOJ/Gold/12865/Legacy/ver1.py
index 8da28f1..e413883 100644
--- a/BOJ/Gold/12865/Legacy/ver1.py
+++ b/BOJ/Gold/12865/Legacy/ver1.py
@@ -14,7 +14,7 @@
     tmpb = tmpbin[2:]
     binidx = [tmpb[j] for j in range(len(tmpb))]
     idx = ["0" for j in range(N)]
-    idx[N - len(binidx) :] = binidx
+    idx[N - len(binidx):] = binidx
     totW = 0
     totV = 0
     for j in range(N):
diff --git a/BOJ/Gold/13459/main.py b/BOJ/Gold/13459/main.py
index f9ffb63..972d452 100644
--- a/BOJ/Gold/13459/main.py
+++ b/BOJ/Gold/13459/main.py
@@ -27,7 +27,8 @@ def gravity(tmppos, direction):
     v1, v2 = dirdict[direction]
     RedGoalIn = False
     while True:
-        if l[rx + v1][ry + v2] != "#" or l[bx + v1][by + v2] != "#":  # 둘 중 하나가 이동 가능할 때
+        if l[rx + v1][ry + v2] != "#" or l[bx +
+                                           v1][by + v2] != "#":  # 둘 중 하나가 이동 가능할 때
             if l[rx + v1][ry + v2] != "#" and not RedGoalIn:  # Red 이동
                 rx += v1
                 ry += v2
diff --git a/BOJ/Gold/13460/main.py b/BOJ/Gold/13460/main.py
index 50724a4..4c319bf 100644
--- a/BOJ/Gold/13460/main.py
+++ b/BOJ/Gold/13460/main.py
@@ -27,7 +27,8 @@ def gravity(tmppos, direction):
     v1, v2 = dirdict[direction]
     RedGoalIn = False
     while True:
-        if l[rx + v1][ry + v2] != "#" or l[bx + v1][by + v2] != "#":  # 둘 중 하나가 이동 가능할 때
+        if l[rx + v1][ry + v2] != "#" or l[bx +
+                                           v1][by + v2] != "#":  # 둘 중 하나가 이동 가능할 때
             if l[rx + v1][ry + v2] != "#" and not RedGoalIn:  # Red 이동
                 rx += v1
                 ry += v2
diff --git a/BOJ/Gold/2174/main.py b/BOJ/Gold/2174/main.py
index 9af1d9e..7106f4d 100644
--- a/BOJ/Gold/2174/main.py
+++ b/BOJ/Gold/2174/main.py
@@ -42,7 +42,8 @@ def goForward(robotNo, cnt):
             break
         if G[nx][ny][0] != 0:
             print(
-                "Robot " + str(robotNo + 1) + " crashes into robot " + str(G[nx][ny][0])
+                "Robot " + str(robotNo + 1) +
+                " crashes into robot " + str(G[nx][ny][0])
             )
             status = False
             break
diff --git a/BOJ/Gold/3109/main.py b/BOJ/Gold/3109/main.py
index d0e0d7e..cb4add2 100644
--- a/BOJ/Gold/3109/main.py
+++ b/BOJ/Gold/3109/main.py
@@ -17,7 +17,8 @@ def DFS(i, j):
     if j == C - 1:
         return True
     for v in vec:
-        if 0 <= i + v < R and l[i + v][j + 1] == "." and not visit[i + v][j + 1]:
+        if 0 <= i + v < R and l[i + v][j +
+                                       1] == "." and not visit[i + v][j + 1]:
             visit[i + v][j + 1] = True
             if DFS(i + v, j + 1):
                 return True
diff --git a/BOJ/Gold/3190/main.py b/BOJ/Gold/3190/main.py
index 279e5d5..46ceb9f 100644
--- a/BOJ/Gold/3190/main.py
+++ b/BOJ/Gold/3190/main.py
@@ -24,7 +24,8 @@
 dir_x, dir_y = 1, 0
 time = 0
 
-rightTurn = {(1, 0): (0, 1), (0, 1): (-1, 0), (-1, 0): (0, -1), (0, -1): (1, 0)}
+rightTurn = {(1, 0): (0, 1), (0, 1): (-1, 0),
+             (-1, 0): (0, -1), (0, -1): (1, 0)}
 leftTurn = {(1, 0): (0, -1), (0, -1): (-1, 0), (-1, 0): (0, 1), (0, 1): (1, 0)}
 
 while True:
diff --git a/BOJ/Gold/9328/main.py b/BOJ/Gold/9328/main.py
index 7815fff..b5ae31c 100644
--- a/BOJ/Gold/9328/main.py
+++ b/BOJ/Gold/9328/main.py
@@ -22,7 +22,8 @@ def BFS(x, y):
                     q.append((nx, ny))
                 elif l[nx][ny].islower():
                     door[ord(l[nx][ny]) - ord("a")] = True
-                    visit = [[False for _ in range(w + 2)] for _ in range(h + 2)]
+                    visit = [[False for _ in range(w + 2)]
+                             for _ in range(h + 2)]
                     l[nx][ny] = "."
                     q.append((nx, ny))
                 elif l[nx][ny].isupper():
@@ -50,7 +51,8 @@ def BFS(x, y):
             door[ord(key) - ord("a")] = True
     for i in range(h):
         for j in range(w):
-            if ord("A") <= ord(l[i][j]) <= ord("Z") and door[ord(l[i][j]) - ord("A")]:
+            if ord("A") <= ord(l[i][j]) <= ord(
+                    "Z") and door[ord(l[i][j]) - ord("A")]:
                 l[i][j] = "."
     for i in l:
         i.insert(0, ".")
diff --git a/BOJ/Gold/9466/main.py b/BOJ/Gold/9466/main.py
index a869afc..30e38f2 100644
--- a/BOJ/Gold/9466/main.py
+++ b/BOJ/Gold/9466/main.py
@@ -12,7 +12,7 @@ def DFS(pos):
     tmp.append(pos)
     if visit[l[pos]]:
         if l[pos] in tmp:
-            res += tmp[tmp.index(l[pos]) :]
+            res += tmp[tmp.index(l[pos]):]
         return
     else:
         DFS(l[pos])
diff --git a/BOJ/Gold/9553/Legacy/ver1.py b/BOJ/Gold/9553/Legacy/ver1.py
index 0a155dd..7093165 100644
--- a/BOJ/Gold/9553/Legacy/ver1.py
+++ b/BOJ/Gold/9553/Legacy/ver1.py
@@ -93,10 +93,10 @@ def returnAvg(x1, y1, x2, y2, angleHitList):
 
 for i in range(T):
     angleHitList = [0 for i in range(36001)]
-    tmpx1 = x1[N[i - 1] * (i) : N[i] * (i + 1)]
-    tmpy1 = y1[N[i - 1] * (i) : N[i] * (i + 1)]
-    tmpx2 = x2[N[i - 1] * (i) : N[i] * (i + 1)]
-    tmpy2 = y2[N[i - 1] * (i) : N[i] * (i + 1)]
+    tmpx1 = x1[N[i - 1] * (i): N[i] * (i + 1)]
+    tmpy1 = y1[N[i - 1] * (i): N[i] * (i + 1)]
+    tmpx2 = x2[N[i - 1] * (i): N[i] * (i + 1)]
+    tmpy2 = y2[N[i - 1] * (i): N[i] * (i + 1)]
     avg.append(returnAvg(tmpx1, tmpy1, tmpx2, tmpy2, angleHitList))
 
 for i in range(T):
diff --git a/BOJ/Platinum/15807/main.py b/BOJ/Platinum/15807/main.py
index 83e74ad..3bcb56c 100644
--- a/BOJ/Platinum/15807/main.py
+++ b/BOJ/Platinum/15807/main.py
@@ -14,7 +14,8 @@
 
 for y in range(1, 3002):
     for x in range(1, 3002):
-        axis[x][y] = diag1[3002 + x - y] + axis[x][y - 1] + diag2[x + y] + light[x][y]
+        axis[x][y] = diag1[3002 + x - y] + \
+            axis[x][y - 1] + diag2[x + y] + light[x][y]
         diag1[3002 + x - y] += light[x][y]
         diag2[x + y] += light[x][y]
 
diff --git a/BOJ/Silver/1010/main.py b/BOJ/Silver/1010/main.py
index 6d04673..456eab7 100644
--- a/BOJ/Silver/1010/main.py
+++ b/BOJ/Silver/1010/main.py
@@ -12,5 +12,6 @@
 
 for i in range(T):
     print(
-        int(math.factorial(M[i]) / (math.factorial(M[i] - N[i]) * math.factorial(N[i])))
+        int(math.factorial(M[i]) /
+            (math.factorial(M[i] - N[i]) * math.factorial(N[i])))
     )
diff --git a/BOJ/Silver/11399/main.py b/BOJ/Silver/11399/main.py
index 0033f5e..e1ef249 100644
--- a/BOJ/Silver/11399/main.py
+++ b/BOJ/Silver/11399/main.py
@@ -7,6 +7,6 @@
 
 res = 0
 for i in range(N):
-    res += sum(l[0 : i + 1])
+    res += sum(l[0: i + 1])
 
 print(res)
diff --git a/BOJ/Silver/11660/main.py b/BOJ/Silver/11660/main.py
index 9d2b1cc..9d8d6a4 100644
--- a/BOJ/Silver/11660/main.py
+++ b/BOJ/Silver/11660/main.py
@@ -11,7 +11,8 @@
 
 for i in range(N):
     for j in range(N):
-        dp[i + 1][j + 1] = l[i + 1][j + 1] + dp[i + 1][j] + dp[i][j + 1] - dp[i][j]
+        dp[i + 1][j + 1] = l[i + 1][j + 1] + \
+            dp[i + 1][j] + dp[i][j + 1] - dp[i][j]
 
 for _ in range(M):
     x1, y1, x2, y2 = map(int, read().split())
diff --git a/BOJ/Silver/1543/main.py b/BOJ/Silver/1543/main.py
index 066d314..930f088 100644
--- a/BOJ/Silver/1543/main.py
+++ b/BOJ/Silver/1543/main.py
@@ -8,7 +8,7 @@
 tmp = 0
 
 while tmp <= len(s1) - len(s2):
-    if s1[tmp : tmp + len(s2)] == s2:
+    if s1[tmp: tmp + len(s2)] == s2:
         cnt += 1
         tmp += len(s2)
     else:
diff --git "a/Programmers/2020_KAKAO_BLIND_RECRUITMENT/\354\236\220\353\254\274\354\207\240\354\231\200_\354\227\264\354\207\240/main.py" "b/Programmers/2020_KAKAO_BLIND_RECRUITMENT/\354\236\220\353\254\274\354\207\240\354\231\200_\354\227\264\354\207\240/main.py"
index 6216bc9..ea5f9f8 100644
--- "a/Programmers/2020_KAKAO_BLIND_RECRUITMENT/\354\236\220\353\254\274\354\207\240\354\231\200_\354\227\264\354\207\240/main.py"
+++ "b/Programmers/2020_KAKAO_BLIND_RECRUITMENT/\354\236\220\353\254\274\354\207\240\354\231\200_\354\227\264\354\207\240/main.py"
@@ -18,7 +18,8 @@ def match(
 ):
     for i in range(M):
         for j in range(M):
-            ni, nj = convert_func(rot, s1, s2, idx_i_1, idx_j_1, idx_i_2, idx_j_2, i, j)
+            ni, nj = convert_func(
+                rot, s1, s2, idx_i_1, idx_j_1, idx_i_2, idx_j_2, i, j)
             if (0 <= ni < N) and (0 <= nj < N):
                 if (idx_i_1 <= ni <= idx_i_2) and (idx_j_1 <= nj <= idx_j_2):
                     if key[i][j] == lock[ni][nj]:
diff --git "a/Programmers/Sort/K\353\262\210\354\247\270\354\210\230/main.py" "b/Programmers/Sort/K\353\262\210\354\247\270\354\210\230/main.py"
index 31df063..c396245 100644
--- "a/Programmers/Sort/K\353\262\210\354\247\270\354\210\230/main.py"
+++ "b/Programmers/Sort/K\353\262\210\354\247\270\354\210\230/main.py"
@@ -1,6 +1,6 @@
 def solution(array, commands):
     answer = []
     for command in commands:
-        tmparr = sorted(array[command[0] - 1 : command[1]])
+        tmparr = sorted(array[command[0] - 1: command[1]])
         answer.append(tmparr[command[2] - 1])
     return answer