Merge pull request mouredev#4429 from ggilperez/#17-Python

#17 - Python

Author: Roswell468

Roadmap/17 - ITERACIONES/python/ggilperez.py

@@ -0,0 +1,71 @@
+# 17 Iterators
+import itertools
+
+# For loop
+print("For")
+for i in range(1, 11):
+    print(i)
+print()
+
+# While
+print("While")
+i = 1
+while i <= 10:
+    print(i)
+    i += 1
+print()
+
+# Recursion
+print("Recursion")
+
+
+def countdown(i=1):
+    print(i)
+    if i == 10:
+        return
+    return countdown(i + 1)
+
+
+countdown()
+print()
+
+# Extra
+
+# List can be iterable
+my_list = [1, 2, 3, 4]
+for item in my_list:
+    print(item)
+
+# Also sets, tuples, dict, strings
+for item in (1, 2, 3, 4):
+    print(item)
+for item in {1, 2, 3, 4}:
+    print(item)
+for item in {"one": 1, "two": 2}:
+    print(item)
+for item in "Hello World":
+    print(item)
+
+# For loop in comprehensions
+print([item for item in my_list])
+print((item for item in my_list))
+print({item for item in my_list})
+print({str(item): item for item in my_list})
+
+# Map
+print(list(map(lambda x: x ** 2, my_list)))
+
+# Filter
+print(list(filter(lambda x: x % 2 == 0, my_list)))
+
+# Reverse an iterable
+for item in reversed(my_list):
+    print(item)
+
+# Sorted an iterable
+for item in sorted([4,2,1,3]):
+    print(item)
+
+# Enumerate
+for index, item in enumerate(["one", "two", "three"]):
+    print(f"{index = }, {item = }")