19 lines
590 B
Python
19 lines
590 B
Python
# The periodic table of elements.
|
|
periodicTable = {
|
|
"H": "Hydrogen", "C": "Carbon", "O": "Oxygen",
|
|
"Fe": "Iron", "Au": "Gold", "Na": "Sodium",
|
|
"Ag": "Silver", "Pb": "Lead", "Pu": "Plutonimum"
|
|
}
|
|
|
|
# Use the prompt "Enter symbol (or Q to quit): "
|
|
# Print either "Invalid symbol." if an error occurs
|
|
# or "element = element name" ("%s = %s")
|
|
|
|
element = input("Enter symbol (or Q to quit): ")
|
|
while element != "Q":
|
|
try:
|
|
print(element, "=", periodicTable[element])
|
|
except KeyError:
|
|
print("Invalid symbol.")
|
|
element = input("Enter symbol (or Q to quit): ")
|