improve code: add type hint

Author: thanhit95

python/demo11b_exec_service.py

@@ -8,7 +8,7 @@
 
 
 
-def do_task(name):
+def do_task(name: str):
     print(f'Task {name} is starting')
     time.sleep(3)
     print(f'Task {name} is completed')

python/demo12a_race_condition.py

@@ -7,7 +7,7 @@
 
 
 
-def do_task(index):
+def do_task(index: int):
     time.sleep(1)
     print(index, end='')
 

python/demo15a_deadlock.py

@@ -11,7 +11,7 @@
 
 
 
-def do_task(name):
+def do_task(name: str):
     mutex.acquire()
     print(f'{name} acquired resource')
     # mutex.release() # Forget this statement ==> deadlock

python/demo17c_reentrant_lock.py

@@ -12,7 +12,7 @@
 
 
 
-def do_task(name):
+def do_task(name: str):
     time.sleep(1)
     with lock:
         print(f'First time {name} acquiring the resource')

python/demo19_read_write_lock.py

@@ -16,15 +16,15 @@
 
 
 
-def read_func(wait_time):
+def read_func(wait_time: int):
     time.sleep(wait_time)
 
     with rwlock.readlock():
         print(f'read: {resource}')
 
 
 
-def write_func(wait_time):
+def write_func(wait_time: int):
     global resource
     time.sleep(wait_time)
 

python/exer01b_max_div.py

@@ -11,7 +11,7 @@
 
 
 
-def prepare_arg(rng_start: int, rng_end: int, num_threads: int) -> list:
+def prepare_arg(rng_start: int, rng_end: int, num_threads: int) -> list[dict]:
     rng_block = (rng_end - rng_start + 1) // num_threads
     rng_a = rng_start
     lst_arg = []
@@ -25,7 +25,7 @@ def prepare_arg(rng_start: int, rng_end: int, num_threads: int) -> list:
 
 
 
-def do_task(arg, lst_res: list):
+def do_task(arg: dict, lst_res: list[dict]):
     res_value = 0
     res_numdiv = 0
 

python/exer01c_max_div.py

@@ -12,7 +12,7 @@
 
 
 
-def prepare_arg(rng_start: int, rng_end: int, num_threads: int) -> list:
+def prepare_arg(rng_start: int, rng_end: int, num_threads: int) -> list[dict]:
     rng_block = (rng_end - rng_start + 1) // num_threads
     rng_a = rng_start
     lst_arg = []
@@ -26,7 +26,7 @@ def prepare_arg(rng_start: int, rng_end: int, num_threads: int) -> list:
 
 
 
-def do_task(arg):
+def do_task(arg: dict):
     res_value = 0
     res_numdiv = 0
 

python/exer07a_data_server.py

@@ -24,7 +24,7 @@ def check_auth_user():
 
 
 
-def process_files(lst_file_name: list, counter: Counter):
+def process_files(lst_file_name: list[str], counter: Counter):
     for file_name in lst_file_name:
         # Read file
         print('[ ReadFile ] Start', file_name)

python/exer07b_data_server.py

@@ -16,7 +16,7 @@ def check_auth_user():
 
 
 
-def process_files(lst_file_name: list, sem: threading.Semaphore):
+def process_files(lst_file_name: list[str], sem: threading.Semaphore):
     for file_name in lst_file_name:
         # Read file
         print('[ ReadFile ] Start', file_name)

python/exer07c_data_server.py

@@ -17,7 +17,7 @@ def check_auth_user():
 
 
 
-def process_files(lst_file_name: list, latch: CountDownLatch):
+def process_files(lst_file_name: list[str], latch: CountDownLatch):
     for file_name in lst_file_name:
         # Read file
         print('[ ReadFile ] Start', file_name)

python/exer07d_data_server.py

@@ -17,7 +17,7 @@ def check_auth_user():
 
 
 
-def process_files(lst_file_name: list, blkq: Queue):
+def process_files(lst_file_name: list[str], blkq: Queue):
     for file_name in lst_file_name:
         # Read file
         print('[ ReadFile ] Start', file_name)

python/mylib_rwlock.py

@@ -16,7 +16,7 @@ def __init__(self):
         self.__wlock = self.WriteLock(self)
 
 
-    def get_reader_count(self):
+    def get_reader_count(self) -> int:
         return self.__reader_count
 
 
@@ -44,11 +44,11 @@ def release_read(self):
                 self.__lk_resource.release()
 
 
-    def readlock(self):
+    def readlock(self) -> 'ReadWriteLock.ReadLock':
         return self.__rlock
 
 
-    def writelock(self):
+    def writelock(self) -> 'ReadWriteLock.WriteLock':
         return self.__wlock