Merge remote-tracking branch 'upstream/master' into Issue-124-handle-async-for-GET_AITER_GET_ANEXT

Conflicts:
	ASTree.cpp

tests/input/build_const_key_map.py

@@ -0,0 +1,22 @@
+cookie = 1
+constant_headers_1 = {
+    'Accept': 'application/json', 
+    'Accept-Encoding': 'gzip, deflate, br', 
+    'Accept-Language': 'es,ca;q=0.9,en;q=0.8', 
+    'Cache-Control': 'no-cache', 
+    'Connection': 'keep-alive', 
+    'Content-Type': 'application/x-www-form-urlencoded', 
+    'Pragma': 'no-cache', 
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36', 
+    'Cookie': cookie }
+
+constant_headers_2 = {
+    'Accept': 'application/json', 
+    'Accept-Encoding': 'gzip, deflate, br', 
+    'Accept-Language': 'es,ca;q=0.9,en;q=0.8', 
+    'Cache-Control': 'no-cache', 
+    'Connection': 'keep-alive', 
+    'Content-Type': 'application/x-www-form-urlencoded', 
+    'Pragma': 'no-cache', 
+    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36', 
+    'Cookie': 'constant cookie' }

tests/input/f-string.py

@@ -0,0 +1,37 @@
+var1 = 'x'
+var2 = 'y'
+x = s1 = var3 = 1.23456
+a = 15
+some_dict = {}
+some_dict[2] = 3
+
+f''
+f'''{123}'''
+f'''{123}{var1}'''
+f'''{123}ok'''
+f'''ok{123}'''
+assigned = f'''{123}'''
+print(f'''{123}''')
+print(f'''{123}{123}{var3}{123}''')
+print(f'''{var3}''')
+print(f'''{var3:4.5}''')
+print(f'''f-string {123}''')
+print(fr'{123}:\s+')
+print(f'x{12}' * 3)
+print(f'''f-string. \t\tformat value 0: {var1}, 1 (!s): {var2!s}, 2 (!r): {var2!r}, 3 (!a): {var2!a}, 4: {var3:6.3}, constant: {123}. End.''')
+print('percent format %d ' % 444 + f'''f-string {123} and {var1!s}''' + f''' add another f-str {var3:2.3}''' + ' regular string ' * 2)
+print(f"""'''{'single quoted string'} 'singles in f-string' {"single quote ' inside"} "doubles in f-string" {"double quoted string"} " both ' {'double quotes " inside'}'''""")
+print(f'''"""{'single quoted string'} 'singles in f-string' {"single quote ' inside"} "doubles in f-string" {"double quoted string"} " both ' {'double quotes " inside'}"""''')
+print(f'single quote \t\t{var1}"{var1!s}" \'{var2!a}{var3:.2f}\' """{var1!r}""" \'\'\'{var2}\'\'\'')
+print(f"double quote \t\t{var1}\"{var1!s}\" '{var2!a}{var3:.2f}' \"\"\"{var1!r}\"\"\" '''{var2}'''")
+print(f'{var3 * x} {var3:.2f} {var3:.5f} {x:02} {x*x:3} {x*x*x:4} {s1:>10} {a:x} {a:o} {a:e}')
+print(f'''some {{braces}} {"inner literal: {braces} {{double braces}}"}''')
+print(f'''f-string dict {some_dict[2]} and {{function call in expression}}: {max([1,20,3])}''')
+print(f'{(lambda x: x*2)(3)}')
+msg = (
+    f'a {var1}'
+    f'cool'
+    f'multiline {var2}\n'
+    f'f-string {var3}'
+)
+print(f'{now:%Y-%m-%d %H:%M}')