Add module section

Author: hermite2053

module/as_script/sequences.py

@@ -0,0 +1,15 @@
+"""
+Let us run
+python sequences.py 10
+
+'55' will be displayed.
+"""
+def triangular_number(n):
+    return int(n * (n + 1) / 2)
+
+def square_pyramidal_number(n):
+    return int(n * (n + 1) * (2 * n + 1) / 6)
+
+if __name__ == "__main__":
+    import sys
+    print(triangular_number(int(sys.argv[1])))

module/import_module/main_a.py

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+import sequences as seq
+sq_py_num = seq.square_pyramidal_number
+
+
+print('triangular numbers:')
+for x in range(11):
+    print(seq.triangular_number(x), end=' ')
+
+print()
+
+print('square pyramidal numbers:')
+for x in range(11):
+    print(sq_py_num(x), end=' ')
+
+print()

module/import_module/main_b.py

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+from sequences import triangular_number
+
+print('triangular numbers:')
+for x in range(11):
+    print(triangular_number(x), end=' ')
+
+print()
+
+
+# a function 'square_pyramidal_number' has not been imported.
+"""
+print('square pyramidal numbers:')
+for x in range(11):
+    print(square_pyramidal_number(x), end=' ')
+
+print()
+"""
+
+# also a module 'sequences' has not been imported.
+# print(sequences.__name__)

module/import_module/main_c.py

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+# import all of names except begin with '_' defined in the module
+from sequences import *
+
+print('triangular numbers:')
+for x in range(11):
+    print(triangular_number(x), end=' ')
+
+print()
+
+print('square pyramidal numbers:')
+for x in range(11):
+    print(square_pyramidal_number(x), end=' ')
+
+print()
+
+# module 'sequences' has not been imported.
+# print(sequences.__name__)

module/import_module/sequences.py

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+def triangular_number(n):
+    return int(n * (n + 1) / 2)
+
+def square_pyramidal_number(n):
+    return int(n * (n + 1) * (2 * n + 1) / 6)