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9 changes: 8 additions & 1 deletion Course3/Lab4/validations.py
Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ def validate_user(username, minlen):
raise TypeError("username must be a string")
if minlen < 1:
raise ValueError("minlen must be at least 1")

# Usernames can't be shorter than minlen
if len(username) < minlen:
return False
Expand All @@ -18,7 +18,14 @@ def validate_user(username, minlen):
# Usernames can't begin with a number
if username[0].isnumeric():
return False
# Usernames must start with a letter
if not username[0].isalpha():
return False
return True



print(validate_user("blue.kale", 3)) # True
print(validate_user(".blue.kale", 3)) # Currently True, should be False
print(validate_user("red_quinoa", 4)) # True
print(validate_user("_red_quinoa", 4)) # Currently True, shoud be False